digital-filters: lint markdown

aaaa/digital-filters-meh/README.md

@@ -31,7 +31,7 @@ endif
 Note `err_thresh` is defined upscript as
 ```{.matlab}
 err_thresh = 1*pi/180. ;   % 1 Degree error max
-``
+```
 
 Further down, we see that a PID update step on for the correction is only run every five iterations; this is weird, but doesn't help us as far as we could tell. Even further downscript, we see that every iteration, a check is performed between target and actual orientations (note that _actual orientation_ means, here, the true simulated physical pose of the satellite):
 ```{.matlab}