Noticed some typo's in descriptions (minor)

I'm using graphql-go to work on an open source project (Weaviate). I was comparing an introspection query result from graphql (js) to one from graphql-go when I noticed two typo's in descriptions at the following spaces (bolded for emphasis):

**@__schema types __Directive Location enumValues OBJECT description**
**_expected:_** "Location adjacent to **an** object type definition"
**_actual:_** "Location adjacent to **a** object definition."

**@ __schema directives deprecated args reason description**
**_expected:_** "Explains why this element was deprecated, usually also including a suggestion for how to access supported similar data. **Formatted in** \[Markdown](https://daringfireball.net/projects/markdown/).
**_actual:_** "Explains why this element was deprecated, usually also including a suggestion for how to access supported similar data. **Formattedin** \[Markdown](https://daringfireball.net/projects/markdown/).

This isn't what I'd call a critical bug, but I encountered these and thought I might as well let you know ;) If I get around to it I'll try to fix them myself with a PR, although that might be overkill (this would come close to your "pull request for whitespace" example, so this might be for the maintainers?).