Ignore certain workflows when changes are only for .md, docs, and docker (#754)

* add paths-ignore for both push and PR to rhel-8.yml and ubuntu-jammy.yml

* add paths-ignore for PR only in tarball.yml

* add rocm-docs-core linting.yml workflow to formatting.yml

* fix small mistake in github directory path

* remove rocm-docs-core linting

.github/workflows/tarball.yml

@@ -4,6 +4,11 @@ on:
   push:
     branches: [ amd-mainline, release/** ]
   pull_request:
+    paths-ignore:
+      - '*.md'
+      - '.github/**/*.md'
+      - 'docs/**'
+      - 'docker/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}