DOC: add SA01 for pandas.Series.to_string (#58779)

Author: tuhinsharma121

ci/code_checks.sh

@@ -220,7 +220,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Series.to_dict SA01" \
         -i "pandas.Series.to_frame SA01" \
         -i "pandas.Series.to_markdown SA01" \
-        -i "pandas.Series.to_string SA01" \
         -i "pandas.Series.update PR07,SA01" \
         -i "pandas.Timedelta.as_unit SA01" \
         -i "pandas.Timedelta.asm8 SA01" \

pandas/core/series.py

@@ -1491,6 +1491,13 @@ def to_string(
         str or None
             String representation of Series if ``buf=None``, otherwise None.
 
+        See Also
+        --------
+        Series.to_dict : Convert Series to dict object.
+        Series.to_frame : Convert Series to DataFrame object.
+        Series.to_markdown : Print Series in Markdown-friendly format.
+        Series.to_timestamp : Cast to DatetimeIndex of Timestamps.
+
         Examples
         --------
         >>> ser = pd.Series([1, 2, 3]).to_string()