[ci] Update and narrow triggers

Author: rossberg

.github/workflows/ci-spec.yml

@@ -2,12 +2,12 @@ name: CI for specs
 
 on:
   push:
-    branches: [ main, wasm-3.0 ]
-    paths: [ .github/**, document/**, spectec/**, specification/** ]
+    branches: [ main ]
+    paths: [ .github/**, document/**, spectec/src/**, specification/** ]
 
   pull_request:
-    branches: [ main, wasm-3.0 ]
-    paths: [ .github/**, document/**, spectec/**, specification/** ]
+    branches: [ main ]
+    paths: [ .github/**, document/**, spectec/src/**, specification/** ]
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch: