Dynamics pages to check links

[mrhoyle2]

Making an offical issue for the rest of the pages that need to be checked for tracking purposes. Please check off pages that are done if completing in multiple pull requests.

• Particle kinetics
• RB kinetics
• MBS
• Shortest flight paths
• Track transition curves
• Projectiles with air resistance
• Celestial velocities
• Accel and braking
• Banked turns
• Four-bar linkages
• Capsizing ships