Update RFC table in README (#331)

Co-authored-by: RomainMuller <RomainMuller@users.noreply.github.com>

README.md

@@ -20,8 +20,8 @@ future state of the libraries and to discover projects for contribution.
 [204](https://github.com/aws/aws-cdk-rfcs/issues/204)|[JSII Go Support](https://github.com/aws/aws-cdk-rfcs/blob/master/text/204-golang-bindings.md)|[@MrArnoldPalmer](https://github.com/MrArnoldPalmer)|👷 implementing
 [253](https://github.com/aws/aws-cdk-rfcs/issues/253)|[CDK Metadata v2](https://github.com/aws/aws-cdk-rfcs/blob/master/text/0253-cdk-metadata-v2.md)||👷 implementing
 [249](https://github.com/aws/aws-cdk-rfcs/issues/249)|[Experimental Code in CDK v2](https://github.com/aws/aws-cdk-rfcs/blob/master/text/0249-v2-experiments.md)|[@ericzbeard](https://github.com/ericzbeard)|👍 approved
-[324](https://github.com/aws/aws-cdk-rfcs/issues/324)|[Construct Hub](https://github.com/aws/aws-cdk-rfcs/issues/324)|[@RomainMuller](https://github.com/RomainMuller)|👍 approved
 [193](https://github.com/aws/aws-cdk-rfcs/issues/193)|[Fixing of type unions](https://github.com/aws/aws-cdk-rfcs/pull/194)|[@RomainMuller](https://github.com/RomainMuller)|⏰ final comments
+[324](https://github.com/aws/aws-cdk-rfcs/issues/324)|[Construct Hub](https://github.com/aws/aws-cdk-rfcs/issues/324)|[@RomainMuller](https://github.com/RomainMuller)|⏰ final comments
 [8](https://github.com/aws/aws-cdk-rfcs/issues/8)|[Project Structure Guidelines](https://github.com/aws/aws-cdk-rfcs/issues/8)|[@rix0rrr](https://github.com/rix0rrr)|✍️ review
 [18](https://github.com/aws/aws-cdk-rfcs/issues/18)|[Open Context Providers](https://github.com/aws/aws-cdk-rfcs/pull/167)|[@ddneilson](https://github.com/ddneilson)|✍️ review
 [77](https://github.com/aws/aws-cdk-rfcs/issues/77)|[CloudFormation Registry Support](https://github.com/aws/aws-cdk-rfcs/pull/266)||✍️ review