doc: fix minor typos in GOVERNANCE.md

PR-URL: #18829
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: Trott

GOVERNANCE.md

@@ -38,7 +38,7 @@ responsibility for the change. In the case of pull requests proposed
 by an existing Collaborator, an additional Collaborator is required
 for sign-off.
 
-If one or more Collaborators oppose a proposed change, then the change can not
+If one or more Collaborators oppose a proposed change, then the change cannot
 be accepted unless:
 
 * Discussions and/or additional changes result in no Collaborators objecting to
@@ -73,7 +73,7 @@ may request that the TSC restore them to active status.
 
 ## Technical Steering Committee
 
-A subset of the Collaborators form the Technical Steering Committee (TSC).
+A subset of the Collaborators forms the Technical Steering Committee (TSC).
 The TSC has final authority over this project, including:
 
 * Technical direction