Documentation changes

Author: danieljvickers

docs/documentation/case.md

@@ -365,11 +365,12 @@ Additional details on this specification can be found in [NACA airfoil](https://
 
 - `angular_vel(i)` is the initial angular velocity of the IB about the x, y, z axes for i=1, 2, 3 in radians per second. When `moving_ibm` equals 2, this rotation rate is just the starting rate of the object, which will then change due to external torques. If `moving_ibm` equals 1, then this is constant if it is a number, or can be described analytically with an expression. 
 
-- `coefficient_of_restitution` is a number from 0 (exclusive) to 1 (inclusive) describing how elastic IB collisions are. 0 is for perfectly inellastic collisions while 1 is for perfectly ellastic colisions.
+- `coefficient_of_restitution` is a number from 0 (exclusive) to 1 (inclusive) describing how elastic IB collisions are. 0 is for perfectly inellastic collisions while 1 is for perfectly ellastic collisions.
 
-- `collision_model` is an integer to select the collision model being used for IB collisions. Using 0 disables collisions and collisino checking. 1 enables the soft-sphere collision model, where all IBs must be circles or sphere and those IBs can collide with each other as well as walls.
+- `collision_model` is an integer to select the collision model being used for IB collisions. Using 0 disables collisions and collisiono checking. 1 enables the soft-sphere collision model, where all IBs must be circles or sphere and those IBs can collide with each other as well as walls.
 
 - `collision_time` is approximately the amount of simulation time used to resolve collisions. This is handled by modifying the spring gonstant used to apply collision forces.
+
 - `ib_coefficient_of_friction` is the coefficient of friction used in IB collisions.
 
 ### 5. Fluid Material's {#sec-fluid-materials}