fix links

Author: mrbullwinkle

articles/cognitive-services/language-service/question-answering/concepts/limits.md

@@ -11,11 +11,11 @@ ms.date: 11/02/2021
 
 # Project limits and boundaries
 
-Question answering limits provided below are a combination of the [Azure Cognitive Search pricing tier limits](../../../search/search-limits-quotas-capacity.md) and question answering limits. Both sets of limits affect how many knowledge bases you can create per resource and how large each knowledge base can grow.
+Question answering limits provided below are a combination of the [Azure Cognitive Search pricing tier limits](../../../../search/search-limits-quotas-capacity.md) and question answering limits. Both sets of limits affect how many knowledge bases you can create per resource and how large each knowledge base can grow.
 
 ## Knowledge bases
 
-The maximum number of knowledge bases is based on [Azure Cognitive Search tier limits](../../../search/search-limits-quotas-capacity.md).
+The maximum number of knowledge bases is based on [Azure Cognitive Search tier limits](../../../../search/search-limits-quotas-capacity.md).
 
 |**Azure Cognitive Search tier** | **Free** | **Basic** |**S1** | **S2**| **S3** |**S3 HD**|
 |---|---|---|---|---|---|----|
@@ -55,7 +55,7 @@ The maximum number of deep-links that can be crawled for extraction of question
 
 ## Metadata limits
 
-Metadata is presented as a text-based `key:value` pair, such as `product:windows 10`. It is stored and compared in lower case. Maximum number of metadata fields is based on your **[Azure Cognitive Search tier limits](../../../search/search-limits-quotas-capacity.md)**.
+Metadata is presented as a text-based `key:value` pair, such as `product:windows 10`. It is stored and compared in lower case. Maximum number of metadata fields is based on your **[Azure Cognitive Search tier limits](../../../../search/search-limits-quotas-capacity.md)**.
 
 If you choose to projects with multiple languages in a single language resource, there is a dedicated test index per project/knowledge base. So the limit is applied per project/knowledge base in the language service.
 
@@ -90,7 +90,7 @@ Overall limits on the content in the knowledge base:
 * Length of file name: 200
 * Supported file formats: ".tsv", ".pdf", ".txt", ".docx", ".xlsx".
 * Maximum number of alternate questions: 300
-* Maximum number of question-answer pairs: Depends on the **[Azure Cognitive Search tier](../../search/search-limits-quotas-capacity.md#document-limits)** chosen. A question and answer pair maps to a document on Azure Cognitive Search index.
+* Maximum number of question-answer pairs: Depends on the **[Azure Cognitive Search tier](../../../../search/search-limits-quotas-capacity.md#document-limits)** chosen. A question and answer pair maps to a document on Azure Cognitive Search index.
 * URL/HTML page: 1 million characters
 
 ## Create project call limits:

articles/cognitive-services/language-service/question-answering/concepts/plan.md

@@ -20,7 +20,7 @@ Each [Azure resource](azure-resources.md#resource-purposes) created with questio
 | Resource | Purpose |
 |--|--|
 | [Language resource](azure-resources.md) resource | Authoring, query prediction endpoint and telemetry|
-| [Cognitive Search](azure-resources.md#cognitive-search-resource) resource | Data storage and search |
+| [Cognitive Search](azure-resources.md#azure-cognitive-search-resource) resource | Data storage and search |
 
 ### Resource planning
 
@@ -35,7 +35,7 @@ A single language resource with the custom question answering feature enabled ca
 When you build a real app, plan sufficient resources for the size of your knowledge base and for your expected query prediction requests.
 
 A knowledge base size is controlled by the:
-* [Cognitive Search resource](../../../search/search-limits-quotas-capacity.md) pricing tier limits
+* [Cognitive Search resource](../../../../search/search-limits-quotas-capacity.md) pricing tier limits
 * [Question answering limits](./limits.md)
 
 The knowledge base query prediction request is controlled by the web app plan and web app. Refer to [recommended settings](azure-resources.md#recommended-settings) to plan your pricing tier.
@@ -46,7 +46,7 @@ Proper resource selection means your knowledge base answers query predictions su
 
 If your knowledge base isn't functioning properly, it's typically an issue of improper resource management.
 
-Improper resource selection requires investigation to determine which [resource needs to change](azure-resources.md#when-to-change-a-pricing-tier).
+Improper resource selection requires investigation to determine which [resource needs to change](azure-resources.md#pricing-tier-considerations).
 
 ## Project
 
@@ -100,7 +100,7 @@ Does your client application support conversation flow, either by providing alte
 
 ### Active learning from a client application
 
-Question answering uses _active learning_ to improve your knowledge base by suggesting alternate questions to an answer. The client application is responsible for a part of this [active learning](../How-To/use-active-learning.md). Through conversational prompts, the client application can determine that the knowledge base returned an answer that's not useful to the user, and it can determine a better answer. The client application needs to send that information back to the knowledge base to improve the prediction quality.
+Question answering uses _active learning_ to improve your knowledge base by suggesting alternate questions to an answer. The client application is responsible for a part of this [active learning](../tutorials/active-learning.md). Through conversational prompts, the client application can determine that the knowledge base returned an answer that's not useful to the user, and it can determine a better answer. The client application needs to send that information back to the knowledge base to improve the prediction quality.
 
 ### Providing a default answer