typo: stackoverflow > stack overflow

.github/ISSUE_TEMPLATE/question.md

@@ -25,7 +25,7 @@ Make sure complete everything in the checklist.
 - [ ] My question is not a tech support question.
 
 **We are not your tech support**. 
-If you have questions related to `pip`, `git`, or something that is not related to Sherlock, please ask them on [StackOverflow](https://stackoverflow.com/) or [r/learnpython](https://www.reddit.com/r/learnpython/)
+If you have questions related to `pip`, `git`, or something that is not related to Sherlock, please ask them on [Stack Overflow](https://stackoverflow.com/) or [r/learnpython](https://www.reddit.com/r/learnpython/)
 
 
 ## Question

sherlock/sherlock.py

@@ -37,7 +37,7 @@ class SherlockFuturesSession(FuturesSession):
         This extends the FuturesSession request method to calculate a response
         time metric to each request.
 
-        It is taken (almost) directly from the following StackOverflow answer:
+        It is taken (almost) directly from the following Stack Overflow answer:
         https://github.com/ross/requests-futures#working-in-the-background
 
         Keyword Arguments: