Add working directory for mkdocs build task

.github/workflows/release.yml

@@ -24,6 +24,7 @@ jobs:
       - 
         name: Build docs to /help
         run: mkdocs build -d help
+        working-directory: hydrus
       - 
         name: Install PyOxidizer
         run: python3 -m pip install pyoxidizer
@@ -80,6 +81,7 @@ jobs:
       - 
         name: Build docs to /help
         run: mkdocs build -d help
+        working-directory: hydrus
       #- name: Cache Qt
       #  id: cache-qt
       #  uses: actions/cache@v1
@@ -163,6 +165,7 @@ jobs:
       - 
         name: Build docs to /help
         run: mkdocs build -d help
+        working-directory: hydrus
       - 
         name: Cache Qt
         id: cache_qt