Update 10_xray_solutions.md - typo fix

docs/10_xray_solutions.md

@@ -111,7 +111,7 @@ plt.annotate('$\mathbf{k\'}$',(15,30),fontsize=14, ha='center',color='k');
 ```
 
 4.
-Since there is only 1 atom in the basis, there are no missing peaks due to a structure factor. We will get diffraction peaks at angles given by Bragg's law $\sin2\theta = \lambda/d_{hkl} = \lambda |\mathbf{G_{hkl}}|/2\pi$. We see that the shortest reciprocal lattice vector gives the smallest angle. Therefore, as a function of increasing $\theta$, we will see peaks at $(hkl)= (100) \quad (010) \quad (110) \quad (200), (020)$, where we took into account that $|\mathbf{b_1}|<|\mathbf{b_2}|$.
+Since there is only 1 atom in the basis, there are no missing peaks due to a structure factor. We will get diffraction peaks at angles given by Bragg's law $\sin2\theta = \lambda/d_{hkl} = \lambda |\mathbf{G_{hkl}}|/2\pi$. We see that the shortest reciprocal lattice vector gives the smallest angle. Therefore, as a function of increasing $\theta$, we will see peaks at $(hkl)= (10) \quad (01) \quad (11) \quad (20) \quad  (21) \quad (02)$, where we took into account that $|\mathbf{b_1}|<|\mathbf{b_2}|$.
 
 ## Exercise 4: Analyzing a 3D power diffraction spectrum