Fix missing function doc links in std.string

Author: FinalEvilution

std/string.d

@@ -40,8 +40,10 @@ $(TR $(TDNW Pruning and Filling)
          $(MYREF entab)
          $(MYREF entabber)
          $(MYREF leftJustify)
+         $(MYREF leftJustifier)
          $(MYREF outdent)
          $(MYREF rightJustify)
+         $(MYREF rightJustifier)
          $(MYREF strip)
          $(MYREF stripLeft)
          $(MYREF stripRight)