doc: Readme sync trigger fix

Issue: rpc documentation on the readme server is not being updated.

Updating the path from `doc/**.md` to `doc/schemas/lightning-*.json` for triggering the action because all `doc/*.7.md` files are fully generated by the `tools/fromschema.py` now.

Added manual trigger event for readme's documentation update.

Changelog-None.

.github/workflows/rdme-docs-sync.yml

@@ -6,6 +6,7 @@ on:
       - 'master'
     paths:
       - 'doc/**'
+  workflow_dispatch:
 
 jobs:
   rdme-docs-sync:  

.github/workflows/readme-rpc-sync.yml

@@ -5,7 +5,13 @@ on:
     branches:
       - 'master'
     paths:
-      - 'doc/**.md'
+      - 'doc/schemas/lightning-*.json'
+      - 'doc/*.1.md'
+      - 'doc/*.5.md'
+      - 'doc/*.8.md'
+      - 'doc/lightningd-*.7.md'
+      - 'doc/reckless.7.md'
+  workflow_dispatch:
 
 jobs:
   rdme-rpc-sync:
@@ -14,29 +20,24 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v4
       with:
-        python-version: '3.8'
+        python-version: 3.8
 
-    - name: Install requests module
-      run: python -m pip install requests
+    - name: Install python modules
+      run: |
+        python -m pip install requests mako grpcio-tools
 
     - name: Install dependencies
       run: bash -x .github/scripts/setup.sh
 
-    - name: Build
+    - name: Build (including rpc .md files)
       run: |
         ./configure --enable-debugbuild
         make -j $(nproc)
-        make -j $(nproc) check-gen-updated
-
-    - name: Make docs
-      run: |
-        make doc-all
-        make check-doc
 
     - name: Set environment variable and run
       env:
-        README_API_KEY: ${{ secrets.README_API_KEY }}  
+        README_API_KEY: ${{ secrets.README_API_KEY }}
       run: python .github/scripts/sync-rpc-cmds.py