Make before/after formatting more consistent

Author: MasterDuke17

doc/Type/StrDistance.pod6

@@ -38,7 +38,7 @@ say $str-dist.after;  # OUTPUT: «fnew␤»
 
 =head2 method Bool
 
-Returns C<True> if before is different from C<After>.
+Returns C<True> if C<before> is different from C<after>.
 
 =head2 method Numeric
 
@@ -58,7 +58,7 @@ Defined as:
 
     multi method Str(StrDistance:D: --> Str)
 
-Returns an C<After> string value.
+Returns an C<after> string value.
 
     =for code :preamble<my $str = "fold">
     my $str-dist = ($str ~~ tr/old/new/);