repo: setup symlink properly

Author: compnerd

default.xml

@@ -14,8 +14,8 @@
   <project remote="github" name="apple/swift-tools-support-core" path="toolchain/swift-tools-support-core" revision="master" />
   <project remote="github" name="apple/sourcekit-lsp" path="toolchain/sourcekit-lsp" revision="master" />
   <project remote="github" name="compnerd/windows-swift" path="windows-swift" revision="master" />
-  <project remote="github" name="compnerd/toolchain-infrastructure" path="infrastructure" revision="master" />
+  <project remote="github" name="compnerd/toolchain-infrastructure" path="infrastructure" revision="master">
+    <linkfile src="Makefile" dest="Makefile" />
+  </project>
   <!-- <project remote="github" name="unicode-org/icu" path="icu" revision="maint/maint-66" /> -->
-
-  <linkfile dest="Makefile" src="infrastructure/Makefile" />
 </manifest>