DOC: fix non-ascii character (from #7698)

Author: jorisvandenbossche

pandas/tools/plotting.py

@@ -2069,7 +2069,7 @@ def plot_frame(frame=None, x=None, y=None, subplots=False, sharex=True,
         From 0 (left/bottom-end) to 1 (right/top-end). Default is 0.5 (center)
     table : boolean, Series or DataFrame, default False
         If True, draw a table using the data in the DataFrame and the data will
-        be transposed to meet matplotlib’s default layout.
+        be transposed to meet matplotlib's default layout.
         If a Series or DataFrame is passed, use passed data to draw a table.
     kwds : keywords
         Options to pass to matplotlib plotting method
@@ -2216,7 +2216,7 @@ def plot_series(series, label=None, kind='line', use_index=True, rot=None,
         From 0 (left/bottom-end) to 1 (right/top-end). Default is 0.5 (center)
     table : boolean, Series or DataFrame, default False
         If True, draw a table using the data in the Series and the data will
-        be transposed to meet matplotlib’s default layout.
+        be transposed to meet matplotlib's default layout.
         If a Series or DataFrame is passed, use passed data to draw a table.
     kwds : keywords
         Options to pass to matplotlib plotting method