fix schema plan file content

Author: ronenlu

doc/md/declarative/plan.mdx

@@ -544,13 +544,13 @@ on:
     branches:
       - master
     paths:
-      - .github/workflows/atlas-plan.yaml
+      - .github/workflows/schema-plan.yml
       - 'schema.sql'
   pull_request:
     branches:
       - master
     paths:
-      - .github/workflows/atlas-plan.yaml
+      - .github/workflows/schema-plan.yml
       - 'schema.sql'
 permissions:
   contents: read
@@ -609,13 +609,13 @@ on:
     branches:
       - master
     paths:
-      - .github/workflows/atlas-schema.yaml
+      - .github/workflows/atlas-schema.yml
       - 'schema.sql'
   pull_request:
     branches:
       - master
     paths:
-      - .github/workflows/atlas-schema.yaml
+      - .github/workflows/atlas-schema.yml
       - 'schema.sql'
 permissions:
   contents: read