patch 8.2.4511: filetype test fails

Problem:    Filetype test fails.
Solution:   Change "endw" to "endwhile".
diff --git a/runtime/autoload/dist/ft.vim b/runtime/autoload/dist/ft.vim
index 4ea13f5..22974b6 100644
--- a/runtime/autoload/dist/ft.vim
+++ b/runtime/autoload/dist/ft.vim
@@ -182,7 +182,7 @@
       break
     endif
     lnum += 1
-  endw
+  endwhile
   setf dtd
 enddef
 
@@ -482,7 +482,7 @@
       break
     endif
     lnum += 1
-  endw
+  endwhile
   setf progress
 enddef
 
@@ -509,7 +509,7 @@
       break
     endif
     lnum += 1
-  endw
+  endwhile
   setf progress
 enddef