Merge pull request dlang#6862 from veelo/patch-4

Fix documentation link.
merged-on-behalf-of: Vladimir Panteleev <CyberShadow@users.noreply.github.com>

Author: dlang-bot

std/file.d

@@ -4809,7 +4809,7 @@ public:
 
     Returns:
         An $(REF_ALTTEXT input range, isInputRange,std,range,primitives) of
-        $(LREF DirEntries).
+        $(LREF DirEntry).
 
     Throws:
         $(LREF FileException) if the directory does not exist.