Added improvements to the cheat sheet based on issue pandas-dev#40680

Author: deveshbervar

doc/path/to/cheat_sheet.rst

@@ -0,0 +1,9 @@
+df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]})
+df.plot(kind='bar')
+pd.set_option('display.max_rows', 10)  # Display up to 10 rows
+# Read CSV
+df = pd.read_csv('data.csv')
+# Write to Excel
+df.to_excel('output.xlsx', index=False)
+df['A_squared'] = df['A'].apply(lambda x: x**2)
+s = pd.Series([1, 2, pd.NA], dtype="Int64")