Fixed arguments

Author: mcasperson

.github/workflows/docker.yaml

@@ -30,7 +30,7 @@ jobs:
       name: Determine Version
       uses: gittools/actions/gitversion/execute@v4.1.0
       with:
-        additionalArguments: /overrideconfig mode=Mainline
+        overrideConfig: mode=Mainline
     - name: Install Octopus Deploy CLI
       uses: OctopusDeploy/install-octocli@v1.1.1
       with:

.github/workflows/dotnetcore.yml

@@ -37,7 +37,7 @@ jobs:
       name: Determine Version
       uses: gittools/actions/gitversion/execute@v4.1.0
       with:
-        additionalArguments: /overrideconfig mode=Mainline
+        overrideConfig: mode=Mainline
     - name: Install Octopus Deploy CLI
       uses: OctopusDeploy/install-octopus-cli-action@v1
       with: