pkg/shelf: spelling fixes

lib/src/handlers/logger.dart

Index: lib/src/handlers/logger.dart
diff --git a/lib/src/handlers/logger.dart b/lib/src/handlers/logger.dart
index eaac75c70465d22ab7907171a12035adb00879e4..c42ee797406ed5b46a61d531fc7bf5a3f9175210 100644
--- a/lib/src/handlers/logger.dart
+++ b/lib/src/handlers/logger.dart
@@ -13,7 +13,7 @@ import '../util.dart';
 /// Middleware which prints the time of the request, the elapsed time for the
 /// inner handlers, the response's status code and the request URI.
 ///
-/// [logger] takes two paramaters.
+/// [logger] takes two parameters.
 ///
 /// `msg` includes the request time, duration, request method, and requested
 /// path.