fix typo in mentor guidance

Author: dpgiakatos

mentor-guidance.md

@@ -1,20 +1,22 @@
 # Instructions for mentors
 
 ## Ideas
-If you're an IHR contributor and you wish to participate in Summer of Code, make a proposal in the [ideas page](ideas.md), based what your project needs.
+If you're an IHR contributor, and you wish to participate in Google Summer of Code, make a proposal in the [ideas page](ideas.md), based what your project needs.
 
 If you wish to mentor, please read the [instructions common to all participants](README.md) and the [Summer of Code FAQ](https://developers.google.com/open-source/gsoc/faq#general).
 
-Your idea proposal should be a brief description of what the project is, what the desired goals would be, what the student/developper should know 
-and an email address for contact. Students are not required to follow your idea to the letter, so regard your proposal as inspiration for the students.
+Your idea proposal should be a brief description of what the project is, what the desired goals would be, what the student/developer should know and an email address for contact.
+Students are not required to follow your idea to the letter, so regard your proposal as inspiration for the students.
 
 ## Mentoring
 Any IHR contributor can be a mentor if you meet the GSoC eligibility requirements. 
 Possibly the student has never worked on such a large project and will need some help. 
-Make sure you're up for the task. Mentoring takes time, and lots and lots of communication.
+Make sure you're up for the task.
+Mentoring takes time, and lots and lots of communication.
 
 Know that we will never assign you to a project you do not want to work on. 
-We will not assign you more projects than you can/want to take on either. And you will have a backup mentor, just in case something unforeseen takes place.
+We will not assign you more projects than you can/want to take on either.
+And you will have a backup mentor, just in case something unforeseen takes place.
 
 ## Signing up as a mentor
 1) Contact one of the admins (Romain or Emile) and give your google-connected account email