Update CONTRIBUTION.md

Small typos

Author: kilon

CONTRIBUTION.md

@@ -13,7 +13,7 @@
 
 ## Suggest new pages
 
-To suggest pages that could fit the wiki, the recommanded may is to open an issue containing a summary of the page, the section in which it should be (General, Internal projects of Pharo or External projects of Pharo) and optionaly links to already existing documentation on the projects.
+To suggest pages that could fit the wiki, the recommended way is to open an issue containing a summary of the page, the section in which it should be (General, Internal projects of Pharo or External projects of Pharo) and optionaly links to already existing documentation on the projects.
 
 On the language and environment part of the wiki we accept to document a part of the system that is already documented outside the wiki at the condition that we reference in a *See also* section those documentation. The goal is to have a centralized information and to provide alternative ways of explaining.