ci: remove path filters from spell-check workflow

Keep spell-check running on all changes as requested in review feedback

Signed-off-by: Hanxi Zhang <hanxizh@amazon.com>

Author: hanxizh9910

.github/workflows/spell-check.yml

@@ -7,11 +7,7 @@ name: Spellcheck
 
 on:
   push:
-    paths-ignore:
-      - '**/*.md'
   pull_request:
-    paths-ignore:
-      - '**/*.md'
 
 concurrency:
   group: spellcheck-${{ github.head_ref || github.ref }}