Fix typo ram to ramGb

Related-PROD: PRODX-0000
Change-Id: If05168d5b4e7031227f71c6b6637f781578a81fe
diff --git a/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml b/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
index 06fb96c..f32657c 100644
--- a/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
+++ b/de/heat-templates/env/mstr1-wrkr3-cmp3-gtw0.yaml
@@ -35,7 +35,7 @@
               - name: vdb
                 role: hdd
                 sizeGb: 20
-            ram: 8
+            ramGb: 8
             cores: 2
             # The roles will be assigned based on node labels.
             # roles: