Update TODO

This TODO was addressed here:

#158
3987c1d

Author: brarcher

TODO

@@ -61,7 +61,7 @@ Check source code:
 
 [     ] * Eliminate abbreviations like nf for number_failed
 [0.9.13] * Run indent on everything, make sure it works well.
-[     ] * Fix START_TEST/END_TEST to look like valid C code.
+[0.13.0] * Fix START_TEST/END_TEST to look like valid C code.
 [     ] * Document things way more.
 [     ] * Create check.h automatically using makeheaders.c (not sure)
 [     ] * Eliminate check_ prefix from files in src/ ... not needed