IVGCVSW-7088 Update CONTRIBUTING.md with main branch

Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>
Change-Id: I89636c3f693cc5ace5c686cea1cedefaddc57867
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f00d63b..3b8d4b8 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -9,14 +9,14 @@
 - Setup Arm NN git repo

   - git clone https://review.mlplatform.org/ml/armnn

   - cd armnn

-  - git checkout master

+  - git checkout main

   - git pull (not required upon initial clone but good practice before creating a patch)

   - git config user.name "FIRST_NAME SECOND_NAME"

   - git config user.email your@email.address

 - Commit using sign-off and push patch for code review

   - git commit -s

-  - git push origin HEAD:refs/for/master

-- Patch will appear on ML Platform Gerrit [here](https://review.mlplatform.org/q/is:open+project:ml/armnn+branch:master)

+  - git push origin HEAD:refs/for/main

+- Patch will appear on ML Platform Gerrit [here](https://review.mlplatform.org/q/is:open+project:ml/armnn+branch:main)

 - See below for adding details of copyright notice and developer certificate

 of origin sign off

 

@@ -54,11 +54,11 @@
 Contributions must go through code review. Code reviews are performed through the [mlplatform.org Gerrit server](https://review.mlplatform.org). Contributors need to signup to this Gerrit server with their GitHub account

 credentials.

 

-Only reviewed contributions can go to the master branch of Arm NN.

+Only reviewed contributions can go to the main branch of Arm NN.

 

 ## Continuous integration

 

-Contributions to Arm NN go through testing at the Arm CI system. All unit, integration and regression tests must pass before a contribution gets merged to the Arm NN master branch.

+Contributions to Arm NN go through testing at the Arm CI system. All unit, integration and regression tests must pass before a contribution gets merged to the Arm NN main branch.

 

 ## Communications