[haxe/en] Fix typo (#2756)

- [x] I solemnly swear that this is all original content of which I am the original author
- [x] Pull request title is prepended with `[language/lang-code]`
- [x] Pull request touches only one file (or a set of logically related files with similar changes made)
- [x] Content changes are aimed at *intermediate to experienced programmers* (this is a poor format for explaining fundamental programming concepts)
- [x] If you've changed any part of the YAML Frontmatter, make sure it is formatted according to [CONTRIBUTING.md](https://github.com/adambard/learnxinyminutes-docs/blob/master/CONTRIBUTING.markdown)
  - [x] Yes, I have double-checked quotes and field names!

Output:
My dog's name isfido, and his other favorite thing is a: teddy

New output:
My dog's name is fido, and his other favorite thing is a: teddy
This commit is contained in:
Nick 2017-06-11 23:45:03 +02:00 committed by ven
parent d2e85e0acd
commit 3983b8c35a