Tell correct command for function renaming

Author: richardpl

doc/fortunes.tips

@@ -65,7 +65,7 @@ Enable the PAGER with 'e scr.pager=less -R'
 Use 'e asm.offset=true' to show offsets in 16bit segment addressing mode.
 The '?' command can be used to evaluate math expressions. Like this: '? (0x34+22)*4'
 Set 'e bin.dbginfo=true' to load debug information at startup.
-Rename a function using the 'afr <newname> @ <offset>' command.
+Rename a function using the 'afn <newname> @ <offset>' command.
 You can redefine descriptive commands in the hud file and using the 'V_' command.
 Pass '-j' to rabin2 to get the information of the binary in JSON format.
 Use rarun2 to launch your programs with a predefined environment.