Fix typos

Signed-off-by: Dimitris Apostolou <[email protected]>

GOVERNANCE.md

@@ -12,12 +12,12 @@ broader project charter, TSC responsibilities include, but are not limited to:
 
 - Discussions, seeking consensus, and where necessary, voting on technical
   matters relating to OpenPBR that affect multiple projects.
-- Maintainance and administration of the OpenPBR GitHub repository.
+- Maintenance and administration of the OpenPBR GitHub repository.
 - Coordinating technical direction of the project.
 - Coordinating marketing, events, and communications regarding OpenPBR.
 
 Within the TSC there are two key subgroups: **Voting Members**, who take on
-formal responsibiities for maintaining the OpenPBR project and vote when
+formal responsibilities for maintaining the OpenPBR project and vote when
 decisions are required; and **Stakeholders**, who represent specific teams and
 companies in the industry and speak on their behalf in OpenPBR discussions.