Correct spelling mistakes.

code/game/bg_lib.c

@@ -1376,7 +1376,7 @@ double fabs( double x ) {
  *    probably requires libm on most operating systems.  Don't yet
  *    support the exponent (e,E) and sigfig (g,G).  Also, fmtint()
  *    was pretty badly broken, it just wasn't being exercised in ways
- *    which showed it, so that's been fixed.  Also, formated the code
+ *    which showed it, so that's been fixed.  Also, formatted the code
  *    to mutt conventions, and removed dead code left over from the
  *    original.  Also, there is now a builtin-test, just compile with:
  *           gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm