reformat argument list for unit paramter

Author: Josiah Baker

pandas/_libs/tslibs/timedeltas.pyx

@@ -1215,12 +1215,20 @@ class Timedelta(_Timedelta):
     Parameters
     ----------
     value : Timedelta, timedelta, np.timedelta64, string, or integer
-    unit : {'Y', 'M', 'W', 'D', 'days', 'day', 'hours', hour', 'hr', 'h', 'm', \
-'minute', 'min', 'minutes', 'T', 'S', 'seconds', 'sec', 'second', 'ms', \
-'milliseconds', 'millisecond', 'milli', 'millis', 'L', 'us', 'microseconds', \
-'microsecond', 'micro', 'micros', 'U', 'ns', 'nanoseconds', 'nano', 'nanos', \
-'nanosecond', 'N'}, default 'ns'
+    unit : str, default 'ns'
         Denote the unit of the input, if input is an integer.
+
+        Possible values:
+
+            * 'Y', 'M', 'W', 'D', 'T', 'S', 'L', 'U', or 'N'
+            * 'days' or 'day'
+            * 'hours', 'hour', 'hr', or 'h'
+            * 'minutes', 'minute', 'min', or 'm'
+            * 'seconds', 'second', or 'sec'
+            * 'milliseconds', 'millisecond', 'millis', or 'milli'
+            * 'microseconds', 'microsecond', 'micros', or 'micro'
+            * 'nanoseconds', 'nanosecond', 'nanos', 'nano', or 'ns'.
+
     **kwargs
         Available kwargs: {days, seconds, microseconds,
         milliseconds, minutes, hours, weeks}.