Fix copying xcpp.data for xeus-cpp-lite deploy page

Author: anutosh491

.github/workflows/deploy-github-page.yml

@@ -78,7 +78,7 @@ jobs:
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }} --output-dir dist
-          cp xcpp.data dist/extensions/@jupyterlite/xeus/static
+          cp $PREFIX/bin/xcpp.data dist/extensions/@jupyterlite/xeus/static
           cp $PREFIX/lib/libclangCppInterOp.so dist/extensions/@jupyterlite/xeus/static
           mkdir -p dist/files
           mv notebooks dist/files

.github/workflows/main.yml

@@ -276,7 +276,7 @@ jobs:
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }}
-          cp xcpp.data _output/extensions/@jupyterlite/xeus/static
+          cp $PREFIX/bin/xcpp.data _output/extensions/@jupyterlite/xeus/static
           cp $PREFIX/lib/libclangCppInterOp.so _output/extensions/@jupyterlite/xeus/static
 
       - name: Setup tmate session

README.md

@@ -112,7 +112,7 @@ We now need to shift necessary files like `xcpp.data` which contains the binary
 we want to include in our application. As of now this would contain all important files like Standard Headers,
 Libraries etc coming out of emscripten's sysroot. Assuming we are still inside build we should do the following
 ```bash
-cp xcpp.data _output/extensions/@jupyterlite/xeus/static
+cp $PREFIX/bin/xcpp.data _output/extensions/@jupyterlite/xeus/static
 cp $PREFIX/lib/libclangCppInterOp.so _output/extensions/@jupyterlite/xeus/static
 ```