Merge pull request microsoft#23974 from ialexryan/patch-1

Fix typo in parser.ts

Author: mhegazy

src/compiler/parser.ts

@@ -3572,7 +3572,7 @@ namespace ts {
             //      2) CoverCallExpressionAndAsyncArrowHead[?Yield, ?Await][no LineTerminator here]=>AsyncConciseBody[?In]
             if (token() === SyntaxKind.AsyncKeyword) {
                 nextToken();
-                // If the "async" is followed by "=>" token then it is not a begining of an async arrow-function
+                // If the "async" is followed by "=>" token then it is not a beginning of an async arrow-function
                 // but instead a simple arrow-function which will be parsed inside "parseAssignmentExpressionOrHigher"
                 if (scanner.hasPrecedingLineBreak() || token() === SyntaxKind.EqualsGreaterThanToken) {
                     return Tristate.False;