README.md in onebox-1.9.15 vs README.md in onebox-1.9.16

@@ -182,10 +182,10 @@
 
 
 Whitelisted Generic Onebox caveats
 ----------------------------------
 
-The Whitelisted Generic Onebox has some caveats for it's use, beyond simply whitelisting the domain.
+The Whitelisted Generic Onebox has some caveats for its use, beyond simply whitelisting the domain.
 
   1. The domain must be whitelisted
   2. The URL you're oneboxing cannot be a root url (e.g. `http://example.com` won't work, but `http://example.com/page` will)
   3. If the oneboxed URL responds with oEmbed and has a `rich` type: the `html` content must contain an `<iframe>`. Responses without an iframe will not be oneboxed.