DOC: Swap fonts in pgf example.

This enables using a known specific font for sans directly, and a group
of fonts for fallback in the comic sans case.

Author: QuLogic

examples/userdemo/pgf_fonts.py

@@ -8,8 +8,10 @@
 import matplotlib.pyplot as plt
 plt.rcParams.update({
     "font.family": "serif",
-    "font.serif": [],                    # use latex default serif font
-    "font.sans-serif": ["DejaVu Sans"],  # use a specific sans-serif font
+    # Use LaTeX default serif font.
+    "font.serif": [],
+    # Use specific cursive fonts.
+    "font.cursive": ["Comic Neue", "Comic Sans MS"],
 })
 
 fig, ax = plt.subplots(figsize=(4.5, 2.5))
@@ -18,8 +20,8 @@
 
 ax.text(0.5, 3., "serif")
 ax.text(0.5, 2., "monospace", family="monospace")
-ax.text(2.5, 2., "sans-serif", family="sans-serif")
-ax.text(2.5, 1., "comic sans", family="Comic Sans MS")
+ax.text(2.5, 2., "sans-serif", family="DejaVu Sans")  # Use specific sans font.
+ax.text(2.5, 1., "comic", family="cursive")
 ax.set_xlabel("µ is not $\\mu$")
 
 fig.tight_layout(pad=.5)