Doc fixes (#27228)

### Description
<!-- Describe your changes. -->

- Run API doc generation pipelines weekly and update retention time to
be within repo limits (10 days).
The pipelines have warnings like this: `Warning: Retention days cannot
be greater than the maximum allowed retention set within the repository.
Using 10 instead.`

- Fix link to plugin EP docs page.

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

The API doc generation pipelines were scheduled too infrequently (twice
a month) compared to the artifact retention period (10 days), so the
artifacts could expire.

Fix a broken link.

Author: edgchen1

.github/workflows/publish-c-apidocs.yml

@@ -9,7 +9,7 @@ on:
       - include/onnxruntime/core/session/**
       - orttraining/orttraining/training_api/include/**
   schedule:
-    - cron: '0 0 1,15 * *'
+    - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -53,4 +53,4 @@ jobs:
         with:
           name: onnxruntime-c-apidocs
           path: _site
-          retention-days: 30
+          retention-days: 10

.github/workflows/publish-csharp-apidocs.yml

@@ -8,7 +8,7 @@ on:
     paths:
       - csharp/**
   schedule:
-    - cron: '0 0 1,15 * *'
+    - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -64,4 +64,4 @@ jobs:
       with:
         name: onnxruntime-csharp-apidocs
         path: _site
-        retention-days: 30
+        retention-days: 10

.github/workflows/publish-java-apidocs.yml

@@ -8,7 +8,7 @@ on:
     paths:
       - java/**
   schedule:
-    - cron: '0 0 1,15 * *'
+    - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -51,4 +51,4 @@ jobs:
         with:
           name: onnxruntime-java-apidocs
           path: _site
-          retention-days: 30
+          retention-days: 10

.github/workflows/publish-js-apidocs.yml

@@ -8,7 +8,7 @@ on:
     paths:
       - js/common/**
   schedule:
-    - cron: '0 0 1,15 * *'
+    - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -51,4 +51,4 @@ jobs:
         with:
           name: onnxruntime-node-apidocs
           path: _site
-          retention-days: 30
+          retention-days: 10

.github/workflows/publish-objectivec-apidocs.yml

@@ -8,7 +8,7 @@ on:
     paths:
     - objectivec/**
   schedule:
-  - cron: '0 0 1,15 * *'
+  - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -56,4 +56,4 @@ jobs:
       with:
         name: onnxruntime-objectivec-apidocs
         path: ./_site
-        retention-days: 30
+        retention-days: 10

.github/workflows/publish-python-apidocs.yml

@@ -9,7 +9,7 @@ on:
       - onnxruntime/python/**
       - docs/python/**
   schedule:
-    - cron: '0 0 1,15 * *'
+    - cron: '0 0 * * 0'
   workflow_dispatch:
 
 concurrency:
@@ -58,4 +58,4 @@ jobs:
         with:
           name: onnxruntime-python-apidocs
           path: _site
-          retention-days: 30
+          retention-days: 10

onnxruntime/test/autoep/library/readme.md

@@ -19,7 +19,7 @@ used for testing and as reference examples.
   used for cross compiling models for different targets.
 
 - `example_plugin_ep_kernel_registry/`
-  Contains a basic plugin execution provider that registers operator kernels with ONNX Runtime, as opposed to compiling 
+  Contains a basic plugin execution provider that registers operator kernels with ONNX Runtime, as opposed to compiling
   nodes.
 
 - `plugin_ep_utils.h`
@@ -39,4 +39,4 @@ used for testing and as reference examples.
 ---
 
 For more information, see the ONNX Runtime documentation on
-[plugin execution providers](https://onnxruntime.ai/docs/execution-providers/plugin-ep-libraries.html).
+[plugin execution providers](https://onnxruntime.ai/docs/execution-providers/plugin-ep-libraries/).