digital filters: fix code blocks

aaaa/digital-filters-meh/README.md

@@ -54,7 +54,7 @@ q_att = startracker(actual);
 ```
 
 Looking inside `startracker()`, we see that it pretty clearly indicates that we *are* the star tracker; every timestep, the code tells us, the adversary, what the true physical orientation is as a quaternion. We can act as the star tracker and send back a wxyz-format quaternion on stdin, which it will use as the star-tracker output (note that, for some reason, the code they give us uses space-separated floats and the actual challenge uses comma-separated floats):
-```{.matplotlib}
+```{.matlab}
 % Model must have a q_att member
 
 function [ q ] = startracker(model) 
@@ -78,7 +78,7 @@ endfunction
 ```
 
 Also note that in `challenge.m`, immediately after the star tracker call, checking the return value for consistency with the physical model is _commented out_. We can tell the satellite that it's pointing anywhere we like and it will believe us, although Kalman error might be bad:
-```
+```{.matlab}
 %err = quat2eul(quat_diff(q_att, target.q_att))';
 %if max(abs(err)) > err_thresh
 %    disp("Error: No way, you are clearly lost, Star Tracker!");