[CI] fix path filtering in the documentation workflows (huggingface#7153)

fix: path

Author: sayakpaul

.github/workflows/build_documentation.yml

@@ -9,8 +9,8 @@ on:
       - v*-patch
     paths:
       - "src/diffusers/**.py"
-      - "examples/"
-      - "docs/"
+      - "examples/**"
+      - "docs/**"
 
 jobs:
   build:

.github/workflows/build_pr_documentation.yml

@@ -4,8 +4,8 @@ on:
   pull_request:
     paths:
       - "src/diffusers/**.py"
-      - "examples/"
-      - "docs/"
+      - "examples/**"
+      - "docs/**"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}