Fix typo and improve text in Twitter sharing button text

It seems the template we are using for sharing the public dashboard in Twitter is:

Watch this amazing visualizations of {{project_name}} made with @cauldronio {{public_dashboard_url}} #OpenSource

Instead of this it should be these.

My proposal for this text would be:

Watch the public metrics about #{{project_name}} development provided by @cauldronio: {{public_dashboard_url}} LevelUp #OpenSource #DevAnalytics