tests: Corrected titles of POP3 and SMTP OAuth 2.0 tests

tests/data/test870

@@ -35,7 +35,7 @@ body
 pop3
 </server>
  <name>
-POP3 OAUTH2 authentication
+POP3 OAuth 2.0 authentication
  </name>
  <command>
 pop3://%HOSTIP:%POP3PORT/870 -u user --oauth2-bearer mF_9.B5f-4.1JqM

tests/data/test908

@@ -25,7 +25,7 @@ REPLY dXNlcj11c2VyAWF1dGg9QmVhcmVyIG1GXzkuQjVmLTQuMUpxTQEB 235 Authenticated
 smtp
 </server>
  <name>
-SMTP OAUTH2 authentication
+SMTP OAuth 2.0 authentication
  </name>
 <stdin>
 mail body