Update 3_drude_model_solutions.md - polish

src/3_drude_model_solutions.md

@@ -82,7 +82,7 @@ $$
 (x(t)-x_0)^2 + (y(t) - y_0 + \frac{E}{B}t))^2 = \frac{v_0^2}{\omega_c^2}
 $$
 
-This represents a [cycloid](https://en.wikipedia.org/wiki/Cycloid#/media/File:Cycloid_f.gif) where the motion is along along $y$ with velocity $\frac{E}{B}$.
+This represents a [cycloid](https://en.wikipedia.org/wiki/Cycloid#/media/File:Cycloid_f.gif): a circular motion around a point that moves in the $y$-direction with a constant velocity $\frac{E}{B}$.
 
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 4.