DOC: Fix validation type error RT04 (pandas-dev#25107) (pandas-dev#25129)

Author: MarckK

ci/code_checks.sh

@@ -240,8 +240,8 @@ fi
 ### DOCSTRINGS ###
 if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
 
-    MSG='Validate docstrings (GL06, GL07, GL09, SS04, PR03, PR05, EX04)' ; echo $MSG
-    $BASE_DIR/scripts/validate_docstrings.py --format=azure --errors=GL06,GL07,GL09,SS04,PR03,PR05,EX04
+    MSG='Validate docstrings (GL06, GL07, GL09, SS04, PR03, PR05, EX04, RT04)' ; echo $MSG
+    $BASE_DIR/scripts/validate_docstrings.py --format=azure --errors=GL06,GL07,GL09,SS04,PR03,PR05,EX04,RT04
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
 fi

pandas/core/algorithms.py

@@ -289,9 +289,9 @@ def unique(values):
     Returns
     -------
     unique values.
-      - If the input is an Index, the return is an Index
-      - If the input is a Categorical dtype, the return is a Categorical
-      - If the input is a Series/ndarray, the return will be an ndarray
+      If the input is an Index, the return is an Index
+      If the input is a Categorical dtype, the return is a Categorical
+      If the input is a Series/ndarray, the return will be an ndarray
 
     See Also
     --------