message: Fix misaligned title
diff: @@ -81,7 +81,7 @@ which will be passed onto CMake when configuring and to the compiler.
  - *Supports substitution*
  ``cmake.configureEnvironment``
  -***************************
  +******************************
  An object containing ``key : value`` pairs of environment variables,
  which will be passed onto CMake *ONLY* when configuring.
  