Update metadata.template.json

There was a typo in the bzlmod for rules_lambda, not big deal
because this was never published to [BCR](https://registry.bazel.build/modules/rules_lambda), this file
was there just so we could pull rules_lambda with an [http_archive](https://bazel.build/rules/lib/repo/http#http_archive).
The integrity on the http_archive is based on our git commits and
the content of the repo at that git commit, the manifest is only
used for metadata of BCR, but again it was never published

Author: manuelnaranjo

.bcr/metadata.template.json

@@ -1,9 +1,9 @@
 {
-    "homepage": "https://github.com/boookingcom/rules_lambda",
+    "homepage": "https://github.com/bookingcom/rules_lambda",
     "maintainers": [],
     "repository": [
         "github:bookingcom/rules_lambda"
     ],
     "versions": [],
     "yanked_versions": {}
-}
+}