Fix comment

Co-authored-by: Copilot <[email protected]>

Author: TIFitis

flang/include/flang/Parser/parse-tree.h

@@ -4364,7 +4364,7 @@ struct OmpDeviceTypeClause {
 //
 // enter-clause ->
 //    ENTER(locator-list) |
-//    FROM(automap-modifier: locator-list) |         // since 6.0
+//    ENTER(automap-modifier: locator-list) |         // since 6.0
 struct OmpEnterClause {
   TUPLE_CLASS_BOILERPLATE(OmpEnterClause);
   MODIFIER_BOILERPLATE(OmpAutomapModifier);