Refine the mission statement

### Overview
We need to finish our mission statement for the project, so that we can use it in our brand guide, websites and one sheet.

### Action Items
- [ ] Revise mission statement
- (it has the word "to" three times in one sentence)
- [ ] Release dependency on #256

### Resources/Instructions
- Current Mission statement (2021-12-20): Mission Statement : The Internship project provides an opportunity for students to work in the fields of the tech industry at LA’s fastest-growing Civic tech non-profit organization to gain real-life work experiences to build confidence, competence, and encouragement to continue nurturing and developing their future in the tech industry.