Refactor spawn_process fn to handle spawn error

This commit modifies the spawn_process function to explicitly return a Result type, handling the error of the spawn() method. This change improves the readability of the error handling and makes it more idiomatic in Rust. As a secondary correction, it fixes a typo in a print statement.

.github/workflows/release.yaml

@@ -30,7 +30,5 @@ jobs:
         uses: actions/upload-artifact@v3
         with:
           name: Binary
-          path: |
-            ${{ steps.compile.outputs.BUILT_ARCHIVE }}
-            ${{ steps.compile.outputs.BUILT_CHECKSUM }}
+          path: ${{ steps.compile.outputs.BUILT_ARCHIVE }}