Fixing links in MAINTAINERS.md (#17)

Link to code of conduct, trademark, add antitrust documents in
MixedRealityToolkit-MVG.

MAINTAINERS.md

@@ -1,6 +1,6 @@
 # Maintainers
 
-This document lists the Maintainers of the Mixed Reality Toolkit for Unity Project. Maintainers may be added once approved by the existing maintainers as described in the [Governance document](./GOVERNANCE.md). By adding your name to this list you are agreeing to abide by the Project governance documents and to abide by all of the Organization's polices, including the [code of conduct](../org-docs/CODE-OF-CONDUCT.md), [trademark policy](../org-docs/TRADEMARKS.md), [antitrust policy](../org-docs/ANTITRUST.md), and the project's [contributing guidelines](./CONTRIBUTING.md). If you are participating because of your affiliation with another organization (designated below), you represent that you have the authority to bind that organization to these policies.
+This document lists the Maintainers of the Mixed Reality Toolkit for Unity Project. Maintainers may be added once approved by the existing maintainers as described in the [Governance document](./GOVERNANCE.md). By adding your name to this list you are agreeing to abide by the Project governance documents and to abide by all of the Organization's polices, including the [code of conduct](https://github.com/MixedRealityToolkit/MixedRealityToolkit-MVG/blob/main/org-docs/CODE-OF-CONDUCT.md), [trademark policy](https://github.com/MixedRealityToolkit/MixedRealityToolkit-MVG/blob/main/org-docs/TRADEMARKS.md), [antitrust policy](https://github.com/MixedRealityToolkit/MixedRealityToolkit-MVG/blob/main/org-docs/ANTITRUST.md), and the project's [contributing guidelines](./CONTRIBUTING.md). If you are participating because of your affiliation with another organization (designated below), you represent that you have the authority to bind that organization to these policies.
 
 |     Name          |     Alias     |     Affiliated Organization     |
 |-------------------|---------------|---------------------------------|