Use .tc instead of .tclc

.tc maps better to the originally-used ucfirst() function.  Thanks to
moritz++ for pointing this out.

Author: paultcochrane

lib/Language/traps.pod

@@ -210,16 +210,15 @@ In Perl 5 one could capitalize a string by using the C<ucfirst> function
     say ucfirst "alice"; #=> Alice
 
 The C<ucfirst> function does not exist in Perl 6; one needs to use the
-C<tclc> method:
+C<tc> method:
 
-    say "alice".tclc;    #=> Alice
+    say "alice".tc;      #=> Alice
 
 which is equivalent to
 
-    say tclc "alice";    #=> Alice
+    say tc "alice";    #=> Alice
 
-Here, C<tclc> means "title case for the first character, lower case for the
-remaining characters".
+Here, C<tc> means "title case".
 
 =end pod