Spelling fixes e to i.

pkg/front_end/lib/src/fasta/scanner/recover.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style licenset hat can be found in the LICENSE file.
 
 library fasta.scanner.recover;
 
 import '../../scanner/token.dart' show TokenType;
 
 import '../fasta_codes.dart'
     show
@@ skipping 134 matching lines @@
     return errorTail.next;
   }
 
   recoverComment() {
     // TODO(ahe): Improve this.
     return skipToEof(errorTail);
   }
 
   recoverUnmatched() {
     // TODO(ahe): Try to use top-level keywords (such as `class`, `typedef`,
-    // and `enum`) and identation to recover.
+    // and `enum`) and indentation to recover.
     return errorTail.next;
   }
 
   for (Token current = tokens; !current.isEof; current = current.next) {
     while (current is ErrorToken) {
       ErrorToken first = current;
       Token next = current;
       do {
         current = next;
         if (errorTail == null) {
@@ skipping 72 matching lines @@
 
 String closeBraceFor(String openBrace) {
   return const {
     '(': ')',
     '[': ']',
     '{': '}',
     '<': '>',
     r'${': '}',
   }[openBrace];
 }