fix: api docs build failures caused by variables in descriptions (#8002)

* chat

* endpoints

src/backend/base/langflow/api/v1/chat.py

@@ -158,7 +158,7 @@ async def build_flow(
     """Build and process a flow, returning a job ID for event polling.
 
     This endpoint requires authentication through the CurrentActiveUser dependency.
-    For public flows that don't require authentication, use the /build_public_tmp/{flow_id}/flow endpoint.
+    For public flows that don't require authentication, use the /build_public_tmp/flow_id/flow endpoint.
 
     Args:
         flow_id: UUID of the flow to build

src/backend/base/langflow/api/v1/endpoints.py

@@ -508,7 +508,7 @@ async def experimental_run_flow(
 
     ### Example usage:
     ```json
-    POST /run/{flow_id}
+    POST /run/flow_id
     x-api-key: YOUR_API_KEY
     Payload:
     {