Update the Erlang wrapper URL.
Update the Erlang wrapper URL.

Change-Id: Ia0a3dfe831e58383d717cf784f4509784480861d
Reviewed-on: https://code-review.googlesource.com/c/38310
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2