review suggestions.

README.md

@@ -161,14 +161,14 @@ the `encryption_*` and `ssl_*` options
 directly to the constructor as keyword arguments, even though it is
 required when they are placed in the environment file.
 
-pam (pam_password) logins
--------------------------
+PAM logins
+----------
 
 Starting with v2.0.0, the python iRODS client is able to authenticate under PAM using the same file-based client environment as does
 any of the iCommands.
 
 Caveat for iRODS 4.3+: when upgrading from 4.2, the "irods_authentication_scheme" setting must be changed from "pam" to "pam_password" in
-`~/.irods/irods_environment.json` for all file based client environments (except that of the iRODS service account).
+`~/.irods/irods_environment.json` for all file-based client environments.
 
 Maintaining a connection
 ------------------------