replace another kolide/fleet referenced (#1572)

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 When filing an issue, make sure to answer these five questions:
 
-1. What version of Kolide are you using (`kolide version --full`)?
+1. What version of Fleet are you using (`fleet version --full`)?
 2. What operating system are you using?
 3. What did you do?
 4. What did you expect to happen?
@@ -78,4 +78,4 @@ members of the project's leadership.
 ### Attribution
 
 This Code of Conduct is adapted from the Contributor Covenant, version 1.4,
-available at http://contributor-covenant.org/version/1/4.
+available at http://contributor-covenant.org/version/1/4.