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src/2_coordinates.md

@@ -372,8 +372,8 @@ We have discussed four different coordinate systems:
 4.  !!! tip "Spherical coordinates" 
     $${\bf r} = (r, \theta, \phi).$$ This sysytem can be
     used in three dimensions. It is particularly suitable for systems with spherical
-    symmetry or functions given in terms of these coordinates.
-    Infinitesimal distance: <br/>
+    symmetry or functions given in terms of these coordinates. <br/>
+    Infinitesimal distance: 
     $$ds^2 =r^2 (\sin^2 \theta d\phi^2 + d\theta^2) +  dr^2 .$$
     Infinitesimal volume:
     $$dV = r^2 \sin(\theta) dr d\theta d\varphi.$$