sentence case

tbrowder · web-flow · commit 6e0f863bb849 · 2018-07-07T19:46:58.000-05:00
diff --git a/doc/Language/functions.pod6 b/doc/Language/functions.pod6
@@ -2,7 +2,7 @@
 
 =TITLE Functions
 
-=SUBTITLE Functions and Functional Programming in Perl 6
+=SUBTITLE Functions and functional programming in Perl 6
 
 Routines are the smallest means of code reuse in Perl 6. They come in several
 forms, most notably L<methods|/type/Method>, which belong in classes and roles
