api docs: Document POST /users/{user_id}/reactivate endpoint.

templates/zerver/api/reactivate-user.md

@@ -0,0 +1,31 @@
+# Reactivate a user
+
+{!api-admin-only.md!}
+
+
+{generate_api_description(/users/{user_id}/reactivate:post)}
+
+## Usage examples
+
+{start_tabs}
+{tab|python}
+
+{generate_code_example(python)|/users/{user_id}/reactivate:post|example}
+
+{tab|curl}
+
+{generate_code_example(curl)|/users/{user_id}/reactivate:post|example}
+
+{end_tabs}
+
+## Arguments
+
+{generate_api_arguments_table|zulip.yaml|/users/{user_id}/reactivate:post}
+
+## Response
+
+#### Example response
+
+A typical successful JSON response may look like:
+
+{generate_code_example|/users/{user_id}/reactivate:post|fixture(200)}

templates/zerver/help/include/rest-endpoints.md

@@ -33,6 +33,7 @@
 * [Get all users](/api/get-all-users)
 * [Get a user](/api/get-user)
 * [Deactivate a user](/api/deactivate-user)
+* [Reactivate a user](/api/reactivate-user)
 * [Update a user](/api/update-user)
 * [Get profile](/api/get-profile)
 * [Create a user](/api/create-user)