[OpenAPI] Remove self-referential externalDocs (#2925)

Author: lcawl

compiler-rs/clients_schema_to_openapi/src/paths.rs

@@ -199,7 +199,8 @@ pub fn add_endpoint(
             tags: vec![endpoint.name.clone()],
             summary: sum_desc.summary,
             description: sum_desc.description,
-            external_docs: tac.convert_external_docs(endpoint),
+            // external_docs: tac.convert_external_docs(endpoint),
+            external_docs: None, // Need values that differ from client purposes
             operation_id: None, // set in clone_operation below with operation_counter
             parameters,
             request_body: request_body.clone(),