DOCS: pandas.Series.sparse.density SA01 docstring validation error fixed

Author: hlakams

ci/code_checks.sh

@@ -139,7 +139,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Series.pad PR01,SA01" \
         -i "pandas.Series.sem PR01,RT03,SA01" \
         -i "pandas.Series.sparse PR01,SA01" \
-        -i "pandas.Series.sparse.density SA01" \
         -i "pandas.Series.sparse.fill_value SA01" \
         -i "pandas.Series.sparse.from_coo PR07,SA01" \
         -i "pandas.Series.sparse.npoints SA01" \

pandas/core/arrays/sparse/array.py

@@ -671,6 +671,11 @@ def density(self) -> float:
         """
         The percent of non- ``fill_value`` points, as decimal.
 
+        See Also
+        --------
+        DataFrame.sparse.from_spmatrix : Create a new DataFrame from a
+            scipy sparse matrix.
+        
         Examples
         --------
         >>> from pandas.arrays import SparseArray