Remove 'optional' from steps (#4756)

Author: jpipkin1

docs/send-data/hosted-collectors/cloud-to-cloud-integration-framework/stix-taxii-1-client-source.md

@@ -58,7 +58,7 @@ To configure a TAXII 1 Client Source:
 1. (Optional) **Fields**. Click the **+Add** button to define the fields you want to associate. Each field needs a name (key) and value.
    * ![green check circle.png](/img/reuse/green-check-circle.png) A green circle with a check mark is shown when the field exists in the Fields table schema.
    * ![orange exclamation point.png](/img/reuse/orange-exclamation-point.png) An orange triangle with an exclamation point is shown when the field doesn't exist in the Fields table schema. In this case, an option to automatically add the nonexistent fields to the Fields table schema is provided. If a field is sent to Sumo Logic that does not exist in the Fields schema it is ignored, known as dropped.
-1. (Optional) **Sumo Logic Threat Intel Source ID**. Provide your own threat intelligence source ID. This is useful for organizing multiple sources.
+1. **Sumo Logic Threat Intel Source ID**. Provide your own threat intelligence source ID. This is useful for organizing multiple sources.
 1. **STIX/TAXII Configuration**:
    * **Discovery URL**. Enter the TAXII Discovery URL provided by the vendor (optional).
 1. **Collection Names**. Enter the collections to fetch, using the poll URL.

docs/send-data/hosted-collectors/cloud-to-cloud-integration-framework/stix-taxii-2-client-source.md

@@ -55,7 +55,7 @@ To configure a TAXII 2 Client Source:
 1. (Optional) **Fields**. Click the **+Add** button to define the fields you want to associate. Each field needs a name (key) and value.
    * ![green check circle.png](/img/reuse/green-check-circle.png) A green circle with a check mark is shown when the field exists in the Fields table schema.
    * ![orange exclamation point.png](/img/reuse/orange-exclamation-point.png) An orange triangle with an exclamation point is shown when the field doesn't exist in the Fields table schema. In this case, an option to automatically add the nonexistent fields to the Fields table schema is provided. If a field is sent to Sumo Logic that does not exist in the Fields schema it is ignored, known as dropped.
-1. (Optional) **Sumo Logic Threat Intel Source ID**. Provide your own threat intelligence source ID. This is useful for organizing multiple sources.
+1. **Sumo Logic Threat Intel Source ID**. Provide your own threat intelligence source ID. This is useful for organizing multiple sources.
 1. **Authentication**. Select the authentication type:
    * **Basic**. Provide your vendor username and password.
    * **API Key**. Provide: