Attempt to fix the rendering of the inline latex formula

README.md

@@ -29,7 +29,7 @@ We used min and max daily simulations to compute the daily heating degree days (
 	\end{cases}
 ```
 
-with $T_{min}$ and $T_{max}$ that are the daily min and max temperatures. $T_{base}$ is the base temperature.
+with $`T_{min}`$ and $`T_{max}`$ that are the daily min and max temperatures. $`T_{base}`$ is the base temperature.
 
 ```math
 	CDD(T_{min}, T_{max}, T_{base})=