Fix path to cache

Author: KernelA

.github/workflows/autobuild.yml

@@ -69,7 +69,7 @@ jobs:
       id: trimesh2-cache
       uses: actions/cache@v2
       with:
-        path: '..\trimesh2-build'
+        path: ..\trimesh2-build
         key: ${{ runner.os }}-build-trimesh2-cache
 
     - name: Build Trimesh2