whitespace fix

Author: timhoffm

lib/matplotlib/backends/_backend_tk.py

@@ -39,8 +39,8 @@
             raise ImportError(
                 "Failed to import tkagg backend. You appear to be using an outdated "
                 "version of uv's managed Python distribution which is not compatible "
-                " with Tk. Please upgrade to the latest uv version, then update "
-                " Python with: `uv python upgrade --reinstall`"
+                "with Tk. Please upgrade to the latest uv version, then update "
+                "Python with: `uv python upgrade --reinstall`"
                 ) from e
         else:
             raise ImportError(