Add markdown linting and spell checks from rocm-docs-core

.github/workflows/linting.yaml

+name: Linting
+
+on:
+  push:
+    branches: [develop, master]
+  pull_request:
+    branches: [develop, master]
+
+jobs:
+  call-workflow-passing-data:
+      name: Documentation  
+      uses: RadeonOpenCompute/rocm-docs-core/.github/workflows/linting.yml@develop