Two small fixes:

- Only check content markdown files
- Add Ethos-U tag to TinyML LP

Author: annietllnd

.github/workflows/test-lp.yml

@@ -17,7 +17,7 @@ jobs:
         uses: tj-actions/changed-files@v46
         with:
           files: |
-             **.md
+             content/**/**.md
       - name: Check for capital letters or spaces in content directory
         run: |
           echo "Checking for capital letters or spaces in content directory paths (excluding file extensions)..."

content/learning-paths/embedded-and-microcontrollers/introduction-to-tinyml-on-arm/_index.md

@@ -24,6 +24,7 @@ subjects: ML
 armips:
     - Cortex-A
     - Cortex-M
+    - Ethos-U
 
 operatingsystems:
     - Linux