Update InferLab.md

teaching/InferLab.md

@@ -13,7 +13,7 @@ The course is led by Philippa Gardner, with support from Jose Fragoso, Daiva Nau
 
 As part of the course, [Peter O’Hearn](http://www.pl-enthusiast.net/2015/09/15/facebooks-peter-ohearn-on-programming-languages/) and [Jules Villard](https://www.doc.ic.ac.uk/~jvillar1/) from Facebook came to Imperial College to talk about [Infer](http://fbinfer.com/), an automatic verification tool based on separation logic, 
 developed Facebook. At [Facebook](https://www.facebook.com/inferstaticanalyzer/) Infer is used every day to verify millions of lines of code. As well as Facebook, Infer is used by Instagram, kiuwan, oculus, Spotify, UBER, WhatsApp, Marks and Spencer, and Sky. 
-Infer was [open sourced](https://code.facebook.com/posts/1648953042007882/open-sourcing-facebook-infer-identify-bugs-before-you-ship/) in June 2015. The lab offered students an opportunity to ran Infer on real world Android applications, such as:
+Infer was [open sourced](https://code.facebook.com/posts/1648953042007882/open-sourcing-facebook-infer-identify-bugs-before-you-ship/) in June 2015. The lab offered students an opportunity to run Infer on real world Android applications, such as:
 
  - [PocketHub](https://github.com/pockethub/PocketHub)
  - [Wikipedia Android app](https://github.com/wikimedia/apps-android-wikipedia)
@@ -26,7 +26,7 @@ based on the [slides](/teaching/Bi-Abduction-slides-Sutherland.pdf) that he deve
 
 ![Infer Lab](/images/images/Infer-lab-2.jpg)
 
-Peter, Jules and the Imperial team then ran the lab on how to use Infer targetting real worl applications. During the tutorial, one of the students, Lorenzo Paoliani, ran infer on ConnectBot, an SSH client for Android, and found several null dereference bugs. He reported this on  github and submitted a pull request for fixing this problem, which has been accepted and now merged.
+Peter, Jules and the Imperial team then showed students at the lab how to use Infer on real worl applications. During the tutorial, one of the students, Lorenzo Paoliani, ran infer on ConnectBot, an SSH client for Android, and found several null dereference bugs. He reported this on  github and submitted a pull request for fixing this problem, which has been accepted and now merged.
 You can see Lorenzo’s [pull request here.](https://github.com/connectbot/connectbot/pull/448)
 
 To follow the Infer team, check their [blog](http://fbinfer.com/blog/) or [Twitter](https://twitter.com/fbinfer)