fix typos in turbomachinery notes

uni/mmme/2047_thermodynamics_and_fluid_dynamics/turbines.md

@@ -21,9 +21,9 @@ There are two types of turbines:
 The dimensionless groups are the same as in pumps:
 
 \begin{align}
-C_H &= \frac{gH}{n^2D^2} &\text{Head coefficient}
-C_P &= \frac{P}{\rho n^3D^5}&\text{Power coefficient}
-C_Q &= \frac{Q}{nD^3}&\text{Capacity coefficient}
+C_H &= \frac{gH}{n^2D^2} &\text{Head coefficient} \\
+C_P &= \frac{P}{\rho n^3D^5}&\text{Power coefficient} \\
+C_Q &= \frac{Q}{nD^3}&\text{Capacity coefficient} \\
 \end{align}
 
 However, in a turbine the efficiency is written as: