tweak docstrings

Author: nicolaskruchten

packages/python/plotly/plotly/express/_doc.py

@@ -402,11 +402,12 @@
     ],
     trendline=[
         "str",
-        "One of `'ols'`, `'lowess'`, `'ma'` or `'ewma'`.",
+        "One of `'ols'`, `'lowess'`, `'rolling'`, `'expanding'` or `'ewm'`.",
         "If `'ols'`, an Ordinary Least Squares regression line will be drawn for each discrete-color/symbol group.",
         "If `'lowess`', a Locally Weighted Scatterplot Smoothing line will be drawn for each discrete-color/symbol group.",
-        "If `'ma`', a Moving Average line will be drawn for each discrete-color/symbol group.",
-        "If `'ewma`', an Exponentially Weighted Moving Average line will be drawn for each discrete-color/symbol group.",
+        "If `'rolling`', a Rolling (e.g. rolling average, rolling median) line will be drawn for each discrete-color/symbol group.",
+        "If `'expanding`', an Expanding (e.g. expanding average, expanding sum) line will be drawn for each discrete-color/symbol group.",
+        "If `'ewm`', an Exponentially Weighted Moment (e.g. exponentially-weighted moving average) line will be drawn for each discrete-color/symbol group.",
         "See the docstrings for the functions in `plotly.express.trendline_functions` for more details on these functions and how",
         "to configure them with the `trendline_options` argument.",
     ],