Stub name change 'proverb' => 'recite' (#743)

Author: habere-et-dispertire

exercises/practice/proverb/.meta/template-data.yaml

@@ -26,5 +26,5 @@ example: |-
   }
 
 stub: |-
-  sub proverb (@nouns) is export {
+  sub recite (@nouns) is export {
   }

exercises/practice/proverb/lib/Proverb.rakumod

@@ -1,4 +1,4 @@
 unit module Proverb;
 
-sub proverb (@nouns) is export {
+sub recite (@nouns) is export {
 }