fix(csharp): s/dotnet-csharpier/csharpier

For both the formatter command and the doctor check.

Fix: #8386

modules/lang/csharp/config.el

@@ -3,7 +3,8 @@
 (use-package! csharp-mode
   :hook (csharp-mode . rainbow-delimiters-mode)
   :config
-  (set-formatter! 'csharpier '("dotnet-csharpier") :modes '(csharp-mode))
+  (set-formatter! 'csharpier '("csharpier" "format" "--write-stdout")
+    :modes '(csharp-mode))
   (set-electric! 'csharp-mode :chars '(?\n ?\}))
   (set-rotate-patterns! 'csharp-mode
     :symbols '(("public" "protected" "private")

modules/lang/csharp/doctor.el

@@ -11,5 +11,5 @@
          "This module requires (:tools tree-sitter)")
 
 (when (modulep! :editor format)
-  (unless (executable-find "dotnet-csharpier")
+  (unless (executable-find "csharpier")
     (warn! "csharpier is not installed, formatting will be disabled.")))