Fixed zen float comment

git-svn-id: https://forth-ev.de/repos/bigforth@1734 3b8d8251-53f3-0310-8f3b-fd1cb8370982

zenfloat.fs

-( Very compressed one-screen floating-point          2116may98py
+\ Very compressed one-screen floating-point            16may98py
 : D10*  D2* 2DUP D2* D2* D+ ; : D+-  0< IF DNEGATE THEN ;
 : TRIM  >R TUCK DABS BEGIN OVER 0< OVER OR WHILE 0 10 UM/MOD >R
   10 UM/MOD NIP R> R> 1+ >R REPEAT ROT D+- DROP R> ;