doc-build.yml: Add west.yml to path filter

Since modules can affect the doc build.

Signed-off-by: Øyvind Rønningstad <[email protected]>

Author: oyvindronningstad

.github/workflows/doc-build.yml

@@ -15,6 +15,7 @@ on:
     - 'tests/**'
     - '.known-issues/doc/**'
     - '**/Kconfig*'
+    - 'west.yml'
 
 jobs:
   build: