(vimPlugins.nvzone-volt): fix pname

The nvzone plugins were named with an `nvzone` prefix due to how generic
the individual plugins are: https://github.com/NixOS/nixpkgs/pull/357120
This caused their pnames to also have an `nvzone` prefix. However,
plugin managers like Lazy.nvim expect pname to match the name of the git
repository, hence the override of pname in this commit.

pkgs/applications/editors/vim/plugins/overrides.nix

@@ -2786,6 +2786,11 @@ in
     dependencies = [ self.nvzone-volt ];
   };
 
+  nvzone-volt = super.nvzone-volt.overrideAttrs {
+    # Plugin managers like Lazy.nvim expect pname to match the name of the git repository
+    pname = "volt";
+  };
+
   obsidian-nvim = super.obsidian-nvim.overrideAttrs {
     checkInputs = with self; [
       # Optional pickers