message: docs: Fix where to find the Typescript typings
  This is what currently rendered:
  /flatubffers
  in
  Besides the typo, is being swallowed, the hope is that puting it between
  backticks will improve the situation.
diff: @@ -17,7 +17,7 @@ documentation to build `flatc` and should be familiar with
  ## FlatBuffers TypeScript library code location
  The code for the FlatBuffers TypeScript library can be found at
  -`flatbuffers/js` with typings available at @types/flatubffers.
  +`flatbuffers/js` with typings available at `@types/flatbuffers`.
  ## Testing the FlatBuffers TypeScript library
  