Patch: pg8000 has wrong docs for connection URL

[Former user]

Minor typo. The docs for pg8000 say the connection string is:

postgresql+pg8000://user@password@host:port/dbname

but should be

postgresql+pg8000://user:password@host:port/dbname

I attached a patch created at trunk.

-Randall

[Philip Jenvey]

applied in c90d7ef74db54b8f5800a3c5d6a7fff45d02c606, thanks