message: Small formatting fix in Tutorial Ch2.
diff: @@ -78,7 +78,7 @@ Let's break down the anatomy of this MLIR operation:
  the types of the arguments in parentheses and the type of the return
  values afterward.
  -- loc("example/file/path":12:1)
  +- `loc("example/file/path":12:1)`
  * This is the location in the source code from which this operation
  originated.
  