add title, subtitle, footnotes example to figure tweaking gallery page

docs/gallery/gallery/customization/figure.jl

@@ -8,16 +8,56 @@
 using AlgebraOfGraphics, CairoMakie
 set_aog_theme!() #src
 
-# To tweak figure attributes, simply use the `figure` keyword when plotting. For example
+# You can pass attributes to the underlying `Makie.Figure` using the `figure` keyword of [`draw`](@ref).
 
 df = (x=rand(100), y=rand(100), z=rand(100), c=rand(["a", "b"], 100))
 xyc = data(df) * mapping(:x, :y, layout=:c)
 layers = linear() + mapping(color=:z)
 plt = xyc * layers
+draw(
+    plt,
+    figure = (;
+        figure_padding = 10,
+        backgroundcolor = :gray80,
+        size = (800, 400)
+    )
+)
+
+# You can also add a figure title, subtitle and footnotes.
+
 fg = draw(
     plt,
-    axis=(aspect=1,),
-    figure=(figure_padding=10, backgroundcolor=:gray80, size=(800, 400))
+    figure = (;
+        figure_padding = 10,
+        backgroundcolor = :gray80,
+        size = (800, 400),
+        title = "Figure title",
+        subtitle = "Some subtitle below the figure title",
+        footnotes = [
+            rich(superscript("1"), "First footnote"),
+            rich(superscript("2"), "Second footnote"),
+        ]
+    )
+)
+
+# The appearance of these elements can be modified further, for all options check the [`draw`](@ref) function.
+
+draw(
+    plt,
+    figure = (;
+        figure_padding = 10,
+        backgroundcolor = :gray80,
+        size = (800, 400),
+        title = "Figure title",
+        subtitle = "Some subtitle below the figure title",
+        footnotes = [
+            rich(superscript("1"), "First footnote"),
+            rich(superscript("2"), "Second footnote"),
+        ],
+        titlecolor = :firebrick,
+        titlealign = :right,
+        footnotefont = :bold,
+    )
 )
 
 # save cover image #src