Typo in 2020/giles (wrong FAQ title)

2020/giles/README.md

@@ -41,7 +41,7 @@ will be converted to the DTMF sound!
 
 If the script [try.sh](%%REPO_URL%%/2020/giles/try.sh) did not play a WAV file, it means you do not have
 SoX installed; see the
-FAQ on "[SDL1 and SDL2](../../faq.html#sox)".
+FAQ on "[using entries that require sound](../../faq.html#sox)".
 In this case install it and try it again or
 play the files `jenny.wav` and `ioccc28.wav` in a program that can play WAV
 files.