Fixed AppVeyor build cache [skip ci]

Xottab-DUTY · Xottab-DUTY · commit 151508610d20 · 2018-08-14T10:39:37.000+05:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -18,7 +18,7 @@ platform:
 - x86
 
 cache:
-- packages -> **\packages.config
+- src/packages -> **/packages.config
 
 before_build:
 - cmd: >-
