fix bullet list in 2020/ferguson1/troubleshooting.md

2020/ferguson1/troubleshooting.md

@@ -8,18 +8,18 @@ anything that can cause more than one issue I will list those separately to keep
 it as structured as possible/easiest to find.
 
 <div id="top">
--   [The top wall isn't (all/some of the time) visible!](#topwall)
+* [The top wall isn't (all/some of the time) visible!](#topwall)
--   [The snake isn't moving!](#notmoving)
+* [The snake isn't moving!](#notmoving)
--   [I can't see the snake head (or other part of the snake)!](#invisiblehead)
+* [I can't see the snake head (or other part of the snake)!](#invisiblehead)
--   [I can't see the bug!](#invisiblebug)
+* [I can't see the bug!](#invisiblebug)
--   [The game froze!](#froze)
+* [The game froze!](#froze)
--   [The game gets slower as the snake gets bigger!](#bigsnake)
+* [The game gets slower as the snake gets bigger!](#bigsnake)
--   [I set SIZE=0 GROW=1, ate a bug but still only the head was visible!  Why?](#headonly)
+* [I set SIZE=0 GROW=1, ate a bug but still only the head was visible!  Why?](#headonly)
--   [I like black text on a white background but even with a white background terminal it ends up black!](#monochrome)
+* [I like black text on a white background but even with a white background terminal it ends up black!](#monochrome)
--   [The text is hard to see (not bright enough)!](#toodark)
+* [The text is hard to see (not bright enough)!](#toodark)
--   [Can I move the snake faster temporarily without having to modify the wait time?](#movefaster)
+* [Can I move the snake faster temporarily without having to modify the wait time?](#movefaster)
--   [On environmental variables more generally and string to int conversions](#envvars)
+* [On environmental variables more generally and string to int conversions](#envvars)
--   [Errors and error reporting](#errors)
+* [Errors and error reporting](#errors)
 </div>