fix build C library workdir

.circleci/continue_config.yml

@@ -310,7 +310,6 @@ jobs:
           path: /tmp/workspace
 
   build-csharp-linux:
-    working_directory: ~/gpt4all-bindings/csharp
     docker:
       - image: mcr.microsoft.com/dotnet/sdk:6.0-jammy # Ubuntu 22.04
     steps:
@@ -328,6 +327,7 @@ jobs:
           command: |
             git submodule init
             git submodule update
+            cd gpt4all-bindings/csharp
             ./build_linux.sh
       - run:
           name: "Install project dependencies"