chore: fix some comments (#4211)

Signed-off-by: jinjingroad <[email protected]>

Author: jinjingroad

internal/js_lexer/js_lexer.go

@@ -114,7 +114,7 @@ const (
 
 	// Identifiers
 	TIdentifier     // Contents are in lexer.Identifier (string)
-	TEscapedKeyword // A keyword that has been escaped as an identifer
+	TEscapedKeyword // A keyword that has been escaped as an identifier
 
 	// Reserved words
 	TBreak

internal/js_parser/js_parser.go

@@ -9175,7 +9175,7 @@ func (p *parser) mangleStmts(stmts []js_ast.Stmt, kind stmtsKind) []js_ast.Stmt
 					body = append(body, stmts[i+1:]...)
 
 					// Don't do this transformation if the branch condition could
-					// potentially access symbols declared later on on this scope below.
+					// potentially access symbols declared later on this scope below.
 					// If so, inverting the branch condition and nesting statements after
 					// this in a block would break that access which is a behavior change.
 					//