small grammar fix (you -> your) in README (VirusTotal#1471)

"GitHub for storing *you* YARA rules" becomes "GitHub for storing *your* YARA rules"

Author: BrianHannay

README.md

@@ -43,7 +43,7 @@ yara-python extension.
 
 ## Additional resources
 
-Do you use GitHub for storing you YARA rules? [YARA-CI](https://yara-ci.cloud.virustotal.com)
+Do you use GitHub for storing your YARA rules? [YARA-CI](https://yara-ci.cloud.virustotal.com)
 may be a useful addition to your toolbelt. This is GitHub application that provides
 continuous testing for your rules, helping you to identify common mistakes and
 false positives.