pubspec: strip whitespace around description
diff --git a/pubspec.yaml b/pubspec.yaml
index 573d121..8ada54c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: path
 version: 1.6.3
 
-description: >
+description: >-
   A string-based path manipulation library. All of the path operations you know
   and love, with solid support for Windows, POSIX (Linux and Mac OS X), and the
   web.