fix: windows test

Author: blindFS

crates/nu-cli/tests/completions/mod.rs

@@ -346,7 +346,7 @@ fn dotnu_completions() {
 
     // Test special paths
     #[cfg(windows)]
-    let completion_str = "use \\b".to_string();
+    let completion_str = "use \\".to_string();
     #[cfg(not(windows))]
     let completion_str = "use /b".to_string();
     let suggestions = completer.complete(&completion_str, completion_str.len());