Rename deprecated cascade._target to cascade.target in tests

hugolib/cascade_test.go

@@ -185,11 +185,11 @@ disableKinds = ['rss','sitemap','taxonomy','term', 'home']
 ---
 title: Home
 cascade:
-- _target:
+- target:
     path: "**"
   params:
     background: yosemite.jpg
-- _target:
+- target:
   params:
     background: goldenbridge.jpg
 ---

hugolib/hugo_smoke_test.go

@@ -431,11 +431,11 @@ Home Content.
 ---
 title: Hjem
 cascade:
-  - _target:
+  - target:
       kind: page
       path: /posts/**
     background: post.jpg
-  - _target:
+  - target:
       kind: term
     background: term.jpg
 ---

hugolib/params_test.go

@@ -33,7 +33,7 @@ background = 'yosemite.jpg'
 [cascade.params]
 a = "home-a"
 b = "home-b"
-[cascade._target]
+[cascade.target]
 kind = 'page'
 +++
 -- content/p1.md --

hugolib/rebuild_test.go

@@ -926,7 +926,7 @@ P5 Content.
 -- content/myothersect/_index.md --
 ---
 cascade:
-- _target:
+- target:
   cascadeparam: "cascadevalue"
 ---
 -- content/myothersect/sub/_index.md --