Minor improvements to invitation email templates #965

Job	Run time
Check conditional workflows and jobs	8s
Admin Client	1m 1s
Build Keycloak	6m 23s
Keycloak JS	45s
Keycloak Masthead	39s
Account UI	37s
Admin UI	1m 49s
Generate Test Seed	1s
UI Shared	44s
Account UI E2E	38s
Admin UI E2E (1, chrome)	10m 18s
Admin UI E2E (2, chrome)	7m 51s
Admin UI E2E (3, chrome)	5m 39s
Admin UI E2E (4, chrome)	9m 1s
Admin UI E2E (5, chrome)	9m 43s
Status Check - Keycloak JavaScript CI	5s
	55m 22s

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