[bazel_sdk] Fix reference to in-tree common repository

See //build/bazel/local_repositories/fuchsia_sdk_common/BUILD.bazel.

Change-Id: Ib5fbe4894e073cb1bc832ac25d222e71ab0b4ca0
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1362356
Reviewed-by: David Turner <digit@google.com>
Commit-Queue: David Turner <digit@google.com>
Fuchsia-Auto-Submit: David Turner <digit@google.com>
1 file changed