Fix Yams version reference

Author: DougGregor

utils/update_checkout/update-checkout-config.json

@@ -77,7 +77,7 @@
                 "swift-xcode-playground-support": "master",
                 "ninja": "release",
                 "icu": "release-65-1",
-                "yams": "releases/tag/3.0.1",
+                "yams": "3.0.1",
                 "cmake": "v3.16.5",
                 "indexstore-db": "master",
                 "sourcekit-lsp": "master",
@@ -107,7 +107,7 @@
                 "swift-xcode-playground-support": "master",
                 "ninja": "release",
                 "icu": "release-65-1",
-                "yams": "releases/tag/3.0.1",
+                "yams": "3.0.1",
                 "cmake": "v3.16.5",
                 "indexstore-db": "master",
                 "sourcekit-lsp": "master",