[MLIR][NFC] fix doc comment for isKnownIsolatedFromAbove

Fix doc comment for Operation::isKnownIsolatedFromAbove().

diff --git a/mlir/include/mlir/IR/Operation.h b/mlir/include/mlir/IR/Operation.h
index d896c43..099ca3c 100644 (file)
--- a/mlir/include/mlir/IR/Operation.h
+++ b/mlir/include/mlir/IR/Operation.h
@@ -432,9 +432,9 @@ public:
     return getTerminatorStatus() == TerminatorStatus::NonTerminator;
   }
 
-  /// Returns if the operation is known to be completely isolated from enclosing
-  /// regions, i.e. no internal regions reference values defined above this
-  /// operation.
+  /// Returns true if the operation is known to be completely isolated from
+  /// enclosing regions, i.e., no internal regions reference values defined
+  /// above this operation.
   bool isKnownIsolatedFromAbove() {
     if (auto *absOp = getAbstractOperation())
       return absOp->hasProperty(OperationProperty::IsolatedFromAbove);