[errors] Fix typo in URI_DOES_NOT_EXIST message.

Change-Id: I2181d196da1c616d8f5cc4c76ea90360ea1b1259
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255480
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
diff --git a/pkg/analyzer/lib/src/error/codes.g.dart b/pkg/analyzer/lib/src/error/codes.g.dart
index b692a0f..33dd6ad 100644
--- a/pkg/analyzer/lib/src/error/codes.g.dart
+++ b/pkg/analyzer/lib/src/error/codes.g.dart
@@ -4638,7 +4638,7 @@
     'URI_DOES_NOT_EXIST',
     "Target of URI doesn't exist: '{0}'.",
     correctionMessage:
-        "Try creating the file referenced by the URI, or Try using a URI for a "
+        "Try creating the file referenced by the URI, or try using a URI for a "
         "file that does exist.",
     hasPublishedDocs: true,
   );
diff --git a/pkg/analyzer/messages.yaml b/pkg/analyzer/messages.yaml
index 1ac7352..4c8250c 100644
--- a/pkg/analyzer/messages.yaml
+++ b/pkg/analyzer/messages.yaml
@@ -14908,7 +14908,7 @@
       ```
   URI_DOES_NOT_EXIST:
     problemMessage: "Target of URI doesn't exist: '{0}'."
-    correctionMessage: Try creating the file referenced by the URI, or Try using a URI for a file that does exist.
+    correctionMessage: Try creating the file referenced by the URI, or try using a URI for a file that does exist.
     hasPublishedDocs: true
     comment: |-
       Parameters: