Add link to Fabric-X monthly calls in Readme (hyperledger#26)

Signed-off-by: Ilie Circiumaru <ici@zurich.ibm.com>

Author: iliecirciumaru

README.md

@@ -85,6 +85,7 @@ To set up the network yourself, follow the tutorial in the [sample deployment sc
 ## Useful links
 
 - [Sample token application](https://github.com/iliecirciumaru/fabric-x/tree/main/samples/tokens)
+- [Fabric-X monthly calls on the 1st Wed of the month](https://zoom-lfx.platform.linuxfoundation.org/meetings/fabric?view=week)
 - [Fabric-X Blog](https://www.lfdecentralizedtrust.org/blog/new-major-contribution-to-hyperledger-fabric-purpose-built-implementation-for-next-gen-digital-assets)
 - [Fabric-X whitepaper](https://eprint.iacr.org/2023/1717.pdf) - detailed description of the Fabric-X. Explains motivation,implementation details and presents performance benchmarks
 - [Fabric-X Committer](https://github.com/hyperledger/fabric-x-committer) Github repository