Formatting README

Author: UnnamedMoose

README.md

@@ -217,11 +217,11 @@ To run:
 ```
 
 Recommended reading:
-- Wikipedia is always a good start:  
+- Wikipedia is always a good start:
 https://en.wikipedia.org/wiki/Convection%E2%80%93diffusion_equation
 - Very brief description of the physical and mathematical concepts behind
 	the scalar transport equation by CFD-online:
-	https://www.cfd-online.com/Wiki/Generic_scalar_transport_equation
+https://www.cfd-online.com/Wiki/Generic_scalar_transport_equation
 - Chapters 3, 4 and especially 5 in "Numerical Methods in Heat, Mass,
     and Momentum Transfer" by Murthy, J. Y. 2002:
-	https://engineering.purdue.edu/ME608/webpage/main.pdf
+https://engineering.purdue.edu/ME608/webpage/main.pdf