website: update calt example as NxN was removed in v4.1

Author: rsms

docs/_data/feature_samples.yml

@@ -6,7 +6,7 @@
     Depending on the surrounding context, different glyphs are used.
     Enabled by default
   samples:
-    - "3›x‹9  12›:‹34  3›–‹8  ›+‹8+x"
+    - "3›*‹9  12›:‹34  3›–‹8  ›+‹8+x"
     - "›(‹SEMI›)‹PER›[‹M›]‹ANE›{‹N›}‹T"
     - "-> --> ---> => ==> <->"
     - "S›@‹N&nbsp; s@n&nbsp; ›:-)‹&nbsp; ›•‹Smile"