Update docs/zkEVM/architecture/protocol/etrog-upgrade.md

Co-authored-by: Dra Murphy <149679879+kmurphypolygon@users.noreply.github.com>

Author: EmpieichO

docs/zkEVM/architecture/protocol/etrog-upgrade.md

@@ -1,6 +1,6 @@
 # Etrog upgrade
 
-This document provides details of the Etrog upgrade, which is Polygon zkEVM's upgrade that succeeds the dragonfruit upgrade.
+This document provides details of the Etrog upgrade, which is Polygon zkEVM's upgrade that succeeds the Dragonfruit upgrade.
 
 Although the Dragonfruit upgrade had some advantages over previous zkEVM versions, it has its own pain points. We take a look at what these pain points are, and how the Etrog upgrade resolves them.