chore: adjust regexp

Author: siddhantgoel

Formula/txtcv.rb

@@ -12,6 +12,6 @@ def install
   end
 
   test do
-    assert_match /^txtcv /, shell_output("#{bin}/txtcv --version")
+    assert_match(/^txtcv/, shell_output("#{bin}/txtcv --version"))
   end
 end