STYLE: fix misplaced whitespace in deprecation f-strings

Author: evgenii

pandas/_libs/tslibs/offsets.pyx

@@ -5132,7 +5132,7 @@ def _warn_about_deprecated_aliases(name: str, is_period: bool) -> str:
             f"\'{name}\' is deprecated and will be removed "
             f"in a future version, please use "
             f"\'{c_PERIOD_AND_OFFSET_DEPR_FREQSTR.get(name)}\'"
-            f" instead.",
+            f"instead.",
             FutureWarning,
             stacklevel=find_stack_level(),
             )
@@ -5146,7 +5146,7 @@ def _warn_about_deprecated_aliases(name: str, is_period: bool) -> str:
                 f"\'{name}\' is deprecated and will be removed "
                 f"in a future version, please use "
                 f"\'{_name}\'"
-                f" instead.",
+                f"instead.",
                 FutureWarning,
                 stacklevel=find_stack_level(),
                 )