syntax error

Author: blackchou32

ships_hybrid_algorithm/config/README.md

@@ -40,4 +40,4 @@ $R \approx \cos(\phi_0)\cdot \frac{\Delta lon}{\Delta lat}$
 ## How to convert lon,lat to x,y
 
 You have defined width and height of the map. You also have min and max lon,lat of the map in decimal degrees.
-$x=\frac{\text{lon}-\text{min\_lon}}{\text{max\_lon}-\text{min\_lon}}\cdot \text{width},\quad y=\frac{\text{lat}-\text{min\_lat}}{\text{max\_lat}-\text{min\_lat}}\cdot \text{height}$
+$x=\frac{\mathrm{lon}-\mathrm{min\_lon}}{\mathrm{max\_lon}-\mathrm{min\_lon}}\cdot \mathrm{width},\ y=\frac{\mathrm{lat}-\mathrm{min\_lat}}{\mathrm{max\_lat}-\mathrm{min\_lat}}\cdot \mathrm{height}$