Spelling fixes e to i.

sdk/lib/_internal/js_runtime/lib/string_helper.dart

Index: sdk/lib/_internal/js_runtime/lib/string_helper.dart
diff --git a/sdk/lib/_internal/js_runtime/lib/string_helper.dart b/sdk/lib/_internal/js_runtime/lib/string_helper.dart
index e202f32c813f2607cbb6127b45c190acd15b47f4..cf8b17ad2459f3a6b8f8249c25bf6776c57503b0 100644
--- a/sdk/lib/_internal/js_runtime/lib/string_helper.dart
+++ b/sdk/lib/_internal/js_runtime/lib/string_helper.dart
@@ -175,7 +175,7 @@ stringReplaceAllFuncUnchecked(receiver, pattern, onMatch, onNonMatch) {
     return stringReplaceAllStringFuncUnchecked(
         receiver, pattern, onMatch, onNonMatch);
   }
-  // Placing the Pattern test here is indistingishable from placing it at the
+  // Placing the Pattern test here is indistinguishable from placing it at the
   // top of the method but it saves an extra check on the `pattern is String`
   // path.
   if (pattern is! Pattern) {