Trigger manifest check only for mentioned paths

Signed-off-by: Sayali Gaikawad <gaiksaya@amazon.com>

.github/workflows/manifests.yml

@@ -3,6 +3,9 @@ name: manifests
 
 on:
   pull_request:
+      - 'manifests/**/*.yml'
+      - '!manifests/templates/**/'
+      - 'legacy-manifests/**/*.yml'
 
 jobs:
   list-changed-manifests:

README.md

@@ -2,7 +2,6 @@
 
 [![python](https://github.com/opensearch-project/opensearch-build/actions/workflows/python-tests.yml/badge.svg)](https://github.com/opensearch-project/opensearch-build/actions/workflows/python-tests.yml)
 [![groovy](https://github.com/opensearch-project/opensearch-build/actions/workflows/groovy-tests.yml/badge.svg)](https://github.com/opensearch-project/opensearch-build/actions/workflows/groovy-tests.yml)
-[![manifests](https://github.com/opensearch-project/opensearch-build/actions/workflows/manifests.yml/badge.svg)](https://github.com/opensearch-project/opensearch-build/actions/workflows/manifests.yml)
 [![codecov](https://codecov.io/gh/opensearch-project/opensearch-build/branch/main/graph/badge.svg?token=03S5XZ80UI)](https://codecov.io/gh/opensearch-project/opensearch-build)
 
 - [Releasing OpenSearch](#releasing-opensearch)