bigtable: Fix branding in cbt help
@@ -189,8 +189,8 @@ features might be changed in backward-incompatible ways and are not recommended
for production use. They are not subject to any SLA or deprecation policy.
Note: cbt does not support specifying arbitrary bytes on the command line for
-any value that Bigtable otherwise supports (e.g., row key, column qualifier,
-etc.).
+any value that Cloud Bigtable otherwise supports (for example, the row key and
+column qualifier).
For convenience, values of the -project, -instance, -creds,
-admin-endpoint and -data-endpoint flags may be specified in
