DOC: Fix Syntax Typo in Indexing (pandas-dev#33887)

Author: zacharylawrence

doc/source/user_guide/indexing.rst

@@ -881,7 +881,7 @@ The operators are: ``|`` for ``or``, ``&`` for ``and``, and ``~`` for ``not``.
 These **must** be grouped by using parentheses, since by default Python will
 evaluate an expression such as ``df['A'] > 2 & df['B'] < 3`` as
 ``df['A'] > (2 & df['B']) < 3``, while the desired evaluation order is
-``(df['A > 2) & (df['B'] < 3)``.
+``(df['A'] > 2) & (df['B'] < 3)``.
 
 Using a boolean vector to index a Series works exactly as in a NumPy ndarray: