MDL-58220 tool_oauth2: Lang string fix

admin/tool/oauth2/lang/en/tool_oauth2.php

@@ -39,7 +39,7 @@
 $string['deleteconfirm'] = 'Are you sure you want to delete the identity issuer "{$a}"? Any plugins relying on this issuer will stop working.';
 $string['deleteendpointconfirm'] = 'Are you sure you want to delete the endpoint "{$a->endpoint}" for issuer "{$a->issuer}"? Any plugins relying on this endpoint will stop working.';
 $string['deleteuserfieldmappingconfirm'] = 'Are you sure you want to delete the user field mapping for issuer "{$a}"?';
-$string['discovered_help'] = 'Discovered means that the OAuth2 endpoints could be automatically determined from the base url for the OAuth service. Not all services are required to be "discovered", but if they are not, then the endpoints and user mapping information will need to be entered manually.';
+$string['discovered_help'] = 'Discovery means that the OAuth2 endpoints could be automatically determined from the base url for the OAuth service. Not all services are required to be "discovered", but if they are not, then the endpoints and user mapping information will need to be entered manually.';
 $string['discovered'] = 'Service discovery successful';
 $string['discoverystatus'] = 'Discovery';
 $string['editendpoint'] = 'Edit endpoint: {$a->endpoint} for issuer {$a->issuer}';