Replace DBMS replication section

By a more relevant one  IMHO

Author: OuesFa

README.md

@@ -83,7 +83,7 @@ This repository is an attempt to consolidate useful resources for Site Reliabili
 - [ ] [Evolutionary Database Design](https://martinfowler.com/articles/evodb.html)
 - [ ] [ACID vs BASE in Databases](https://medium.com/geekculture/acid-vs-base-in-databases-1bcad774da26)
 - [ ] [Understanding Database Sharding](https://www.digitalocean.com/community/tutorials/understanding-database-sharding)
-- [ ] [Data Replication in DBMS](https://www.geeksforgeeks.org/data-replication-in-dbms)
+- [ ] [Data Replication in DBMS](https://galeracluster.com/library/documentation/tech-desc-introduction.html#database-replication)
 - [ ] [SQL vs. NoSQL Database: When to Use, How to Choose](https://towardsdatascience.com/datastore-choices-sql-vs-nosql-database-ebec24d56106)
 
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