Fix some typos

community.org

@@ -22,7 +22,7 @@ You can also check this page for more [[https://orgmode.org/worg/org-web-social.
   :CUSTOM_ID: chatting
   :END:
 
-You can connect with other org-thusiasts via IRC at ~#orgmode~ on
+You can connect with other org-thusiasts via IRC at ~#org-mode~ on
 [[https://freenode.net/][freenode]].
 
 * Listing current contributors

contribute.org

@@ -65,7 +65,7 @@ assignment process fill out [[https://orgmode.org/request-assign-future.txt][thi
 ~$ git pull
 ~$ git checkout -b my-changes
 # make some changes
-~$ git commit -a -m "Definately following the commit conventions"
+~$ git commit -a -m "Definitely following the commit conventions"
 # repeat a few times, as appropriate
 ~$ git format-patch master
 # optional, see: https://git-send-email.io/