Update release notes with ellipse annotation

Author: ckcherry23

doc/users/next_whats_new/ellipse_annotation.rst

@@ -0,0 +1,15 @@
+``ellipse`` boxstyle option for annotations
+-------------------------------------------
+
+The `ellipse` option for boxstyle can now be used to create annotations
+with an elliptical outline. It can be used as a closed curve shape for
+longer texts instead of the `circle` boxstyle which can get quite big.
+
+.. plot::
+    :include-source: true
+
+    import matplotlib.pyplot as plt
+    fig, ax = plt.subplots(figsize=(5, 5))
+    t = ax.text(0.5, 0.5, "elliptical box",
+            ha="center", size=15,
+            bbox=dict(boxstyle="ellipse,pad=0.3"))

lib/matplotlib/patches.py

@@ -2344,7 +2344,7 @@ def __call__(self, x0, y0, width, height, mutation_size):
     class Ellipse:
         """
         An elliptical box.
-        
+
         .. versionadded:: 3.7
         """