fix appveyor skip condition for doc changes

diff --git a/.appveyor.yml b/.appveyor.yml
index b2a518e91798584d2774b6d48998388658daab9c..9257aeadc38bb85bf5df3d16f65b7932c9ea8a12 100644 (file)
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -66,7 +66,7 @@ environment:
 # documentation builds are tested elsewhere and cheaper
 skip_commits:
   files:
-    - doc/
+    - doc/**/*
     - CHANGELOG
 
 # it is OK to specify paths that may not exist for a particular test run