Update README.md

convection_diffusion/validation/rotating_pulse_explicit/README.md

@@ -11,7 +11,7 @@
 This example is taken from [Donea, J., & Huerta, A. (2003). Finite Element Methods for Flow Problems. Section 5.6.2]. We solve the transient convection diffusion equation
 <img src="https://render.githubusercontent.com/render/math?math=\frac{\partial \phi}{\partial t} %2B v \cdot  \nabla \phi %2B \phi \nabla \cdot v - \nabla \cdot k \nabla \phi = f">, where null Dirichlet boundary condition and null initial conditions are set. We refer to the above reference for further details.
 
-Citing [Donea, J., & Huerta, A. (2003). Finite Element Methods for Flow Problems. Section 5.6.2] this problem requires *accurate transport of the unknown and boundary layers appear in the solution due to the Dirichlet boundary conditions. Therefore, high-order time-stepping schemes and stabilized formulations are needed in order to obtain an accurate solution*.
+Citing [Donea, J., & Huerta, A. (2003). Finite Element Methods for Flow Problems. Section 5.6.2], this problem requires *accurate transport of the unknown and boundary layers appear in the solution due to the Dirichlet boundary conditions. Therefore, high-order time-stepping schemes and stabilized formulations are needed in order to obtain an accurate solution*.
 
 The problem is solved exploiting the **Runge-Kutta 4 time integration explicit method**, and it can be run with four different stabilizations:
 * quasi-static algebraic subgrid scale (QSASGS)
@@ -26,4 +26,4 @@ We present the temporal evolution of <img src="https://render.githubusercontent.
   <img src="data/transient_rotating_pulse.gif" alt="temperature" style="width: 600px;"/>
 </p>
 
-We can observe that the results we obtain are consistent with the reference [Donea, J., & Huerta, A. (2003). Finite Element Methods for Flow Problems. Section 5.6.2].
+We can observe that the results we obtain are consistent with the reference [Donea, J., & Huerta, A. (2003). Finite Element Methods for Flow Problems. Section 5.6.2].