Typo on Lambda Concurrent Execution Throttling Behavior documentation

[wenzaca]

Opened a FR #122 with updates to the docs. On the file concurrent-executions.md there is a typo on line 93, the word successfully is miss spelled as 'succesfully'

According to:
https://en.oxforddictionaries.com/definition/successfully
and, https://en.oxforddictionaries.com/search?filter=dictionary&query=succesfully