hello/ex-2 -> hello

doc/meta.xml

@@ -61,7 +61,7 @@ $ nix-env -qa hello --meta --json
                 "i686-openbsd",
                 "x86_64-openbsd"
             ],
-            "position": "/home/user/dev/nixpkgs/pkgs/applications/misc/hello/ex-2/default.nix:14"
+            "position": "/home/user/dev/nixpkgs/pkgs/applications/misc/hello/default.nix:14"
         },
         "name": "hello-2.9",
         "system": "x86_64-linux"

doc/quick-start.xml

@@ -56,7 +56,7 @@ $ git add pkgs/development/libraries/libfoo/default.nix</screen>
 
         <listitem>
           <para>GNU Hello: <link
-          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/misc/hello/ex-2/default.nix"><filename>pkgs/applications/misc/hello/ex-2/default.nix</filename></link>.
+          xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/misc/hello/default.nix"><filename>pkgs/applications/misc/hello/default.nix</filename></link>.
           Trivial package, which specifies some <varname>meta</varname>
           attributes which is good practice.</para>
         </listitem>

pkgs/top-level/all-packages.nix

@@ -11585,7 +11585,7 @@ let
     inherit (gnome) gnome_python;
   };
 
-  hello = callPackage ../applications/misc/hello/ex-2 { };
+  hello = callPackage ../applications/misc/hello { };
 
   helmholtz = callPackage ../applications/audio/pd-plugins/helmholtz { };