patch 9.1.1290: tests: missing cleanup in test_filetype.vim

Problem:  tests: missing cleanup in test_filetype.vim, wrong name in
          test_plugin_matchparen
Solution: Add :bwipe corresponding to :split, rename test case

closes: #17088

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_plugin_matchparen.vim b/src/testdir/test_plugin_matchparen.vim
index dca6e32..74563a1 100644
--- a/src/testdir/test_plugin_matchparen.vim
+++ b/src/testdir/test_plugin_matchparen.vim
@@ -178,7 +178,7 @@
 endfunc
 
 " Test for the WinScrolled event
-func Test_scroll_winenter()
+func Test_scroll_winscrolled()
   CheckScreendump
 
   let lines =<< trim END