stetho.mdx (setup - Stetho Guidance)
stetho.mdx (setup - Stetho Guidance)

Summary: Restyle of page, including changes to spelling, grammar, links, and structure (where relevant).

Reviewed By: aigoncharov

Differential Revision: D36373984

fbshipit-source-id: 0d0dd4232fc69a771c47c344b5c848d99d8cd0cb

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