ci: add workflow_dispatch to the build-docs.yml (#138)

Signed-off-by: Yurii Shynbuiev <[email protected]>

.github/workflows/build-docs.yml

@@ -5,6 +5,12 @@ on:
     branches:
       - main
   pull_request:
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: "Branch to build the does from"
+        required: false
+        default: "main"
 
 defaults:
   run:
@@ -17,7 +23,7 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request' || github.event_name == 'workflow_dispatch'
     steps:  
       - uses: actions/checkout@v4
         with: