fixes gdb options

lectures/debugging-strategies/slides.qmd

@@ -837,16 +837,17 @@ end program loop_count_2d
 
  - `b <line>`: Add breakpoint at given line number
  - `info b`: Show current breakpoints
- - `clear`: Clear all breakpoints
+ - `clear`: Clear current breakpoint
+ - `d`: Clear all breakpoints
  - `run`: Run the program
  - `l`: Print code
  - `info locals`: Print value of local variables
- - `p <var>`: Print value of variable
 
 :::
 
 :::{.column width=50%}
 
+ - `p <var>`: Print value of variable
  - `up`, `down` or `frame <num>`: Navigate stack
  - `n`: Next line (without descending)
  - `step`: Next command