fix/update mintlify mcp description - #69

Running Vale across on the following files affected by this PR:

- README.md
- index.mdx
- nodes/operations/fusaka.mdx

Attempting to initialize Vale linter...
Customer vale configuration detected. Attempting to sync packages...
Packages synced successfully.
Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

README.md:
	- 19:19    Did you really mean 'APIs'?
	- 31:5     Did you really mean 'npm'?
	- 31:16    Did you really mean 'pnpm'?

index.mdx:
	- 9:12     Did you really mean 'maxWidth'?
	- 49:12    Did you really mean 'stablecoin'?

nodes/overview/index.mdx:
	- 9:12    Did you really mean 'maxWidth'?


Found 6 suggested changes across 3 files in 848.54ms