[WASM] [CI] Specify repository name

Author: kateinoigakukun

.github/workflows/main.yml

@@ -15,6 +15,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v1
+        with:
+          path: swift
       - name: Build Linux installable archive
         run: ./utils/webassembly/ci-linux.sh
       - name: Upload Linux installable archive
@@ -36,6 +38,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v1
+        with:
+          path: swift
       - name: Build macOS installable archive
         run: ./utils/webassembly/ci-mac.sh
       - name: Upload macOS installable archive