docs: correct the docs for option_context (#263)

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Author: ashleyxuu

third_party/bigframes_vendored/pandas/_config/config.py

@@ -11,11 +11,12 @@ class option_context(contextlib.ContextDecorator):
 
  You need to invoke as ``option_context(pat, val, [(pat, val), ...])``.
 
- Examples
- --------
- >>> import bigframes
- >>> with bigframes.option_context('display.max_rows', 10, 'display.max_columns', 5):
- ... pass
+ **Examples:**
+
+ >>> import bigframes
+
+ >>> with bigframes.option_context('display.max_rows', 10, 'display.max_columns', 5):
+ ... pass
  """
 
  def __init__(self, *args) -> None: