DOC: Clarify some syntax when using win_types

DOC: Clarify where to the additional arguments for some win_types
For example, std needs to specify when win_types is gaussian. However, std should be specified in the operation argument, not as one of the rolling arguments. This change is to clarify this point. 

Closes: #34593

Author: linnndachen

pandas/core/window/rolling.py

@@ -922,11 +922,11 @@ class Window(_Window):
     * ``blackmanharris``
     * ``nuttall``
     * ``barthann``
-    * ``kaiser`` (needs beta)
-    * ``gaussian`` (needs std)
-    * ``general_gaussian`` (needs power, width)
-    * ``slepian`` (needs width)
-    * ``exponential`` (needs tau), center is set to None.
+    * ``kaiser`` (needs beta in operation argument)
+    * ``gaussian`` (needs std in operation argument)
+    * ``general_gaussian`` (needs power, width in operation argument)
+    * ``slepian`` (needs width in operation argument)
+    * ``exponential`` (needs tau in operation argument), center is set to None.
 
     If ``win_type=None`` all points are evenly weighted. To learn more about
     different window types see `scipy.signal window functions