DOC trying to improve readability of example (#51634)

* DOC removed parentheses for readability

* minor nit

---------

Co-authored-by: Marco Edward Gorelli <[email protected]>

Author: DeaMariaLeon

pandas/errors/__init__.py

@@ -455,12 +455,14 @@ class CSSWarning(UserWarning):
     Examples
     --------
     >>> df = pd.DataFrame({'A': [1, 1, 1]})
-    >>> (df.style.applymap(lambda x: 'background-color: blueGreenRed;')
-    ...         .to_excel('styled.xlsx')) # doctest: +SKIP
-    ... # CSSWarning: Unhandled color format: 'blueGreenRed'
-    >>> (df.style.applymap(lambda x: 'border: 1px solid red red;')
-    ...         .to_excel('styled.xlsx')) # doctest: +SKIP
-    ... # CSSWarning: Too many tokens provided to "border" (expected 1-3)
+    >>> df.style.applymap(
+    ...     lambda x: 'background-color: blueGreenRed;'
+    ... ).to_excel('styled.xlsx')  # doctest: +SKIP
+    CSSWarning: Unhandled color format: 'blueGreenRed'
+    >>> df.style.applymap(
+    ...     lambda x: 'border: 1px solid red red;'
+    ... ).to_excel('styled.xlsx')  # doctest: +SKIP
+    CSSWarning: Unhandled color format: 'blueGreenRed'
     """