Correct capitalization for GitHub, fix SQLite typo

[joshuago]

Description

Small capitalization and typo fixes for GitHub (previously "Github"), and correct spelling and capitalization for SQLite (previously "sqllite").

Server Details

• Server: N/A
• Changes to: N/A

Motivation and Context

Inspires additional confidence and less distracting for picky readers going through the list.

How Has This Been Tested?

Visual review since it's a documentation change.

Breaking Changes

None anticipated or likely. Documentation change only.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options

Additional context

Also added a period at the end of the first GitHub bullet point to be consistent with the items right above and below it. Not going to go through and change all the bullet points to be consistent with having a period in order to keep this change small and targeted.