Merge pull request matplotlib#31217 from rcomer/quiver-mid

DOC: use pivot='middle' instead of 'mid' in quiver demo

Author: scottshambaugh

galleries/examples/images_contours_and_fields/quiver_demo.py

@@ -30,9 +30,9 @@
 # %%
 
 fig2, ax2 = plt.subplots()
-ax2.set_title("pivot='mid'; every third arrow; units='inches'")
+ax2.set_title("pivot='middle'; every third arrow; units='inches'")
 Q = ax2.quiver(X[::3, ::3], Y[::3, ::3], U[::3, ::3], V[::3, ::3],
-               pivot='mid', units='inches')
+               pivot='middle', units='inches')
 qk = ax2.quiverkey(Q, 0.9, 0.9, 1, r'$1 \frac{m}{s}$', labelpos='E',
                    coordinates='figure')
 ax2.scatter(X[::3, ::3], Y[::3, ::3], color='r', s=5)