docs: add cluster scaling guide for VM installs - #743

Running Vale across on the following files affected by this PR:

- enterprise/vm-install/admin-console-configuration.mdx
- enterprise/vm-install/scaling.mdx

Attempting to initialize Vale linter...
No customer vale configuration detected. Using Mintlify's default configuration.
Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

enterprise/vm-install/admin-console-configuration.mdx:
	- 39:74      Did you really mean 'hostname'?
	- 44:7       Did you really mean 'hostname'?
	- 46:13      Did you really mean 'Hostname'?
	- 57:89      Did you really mean 'hostnames'?
	- 57:242     Did you really mean 'hostnames'?
	- 65:30      Did you really mean 'Hostname'?
	- 66:28      Did you really mean 'Hostname'?
	- 67:33      Did you really mean 'Hostname'?
	- 67:46      Did you really mean 'Keycloak'?
	- 68:28      Did you really mean 'Hostname'?
	- 69:30      Did you really mean 'Hostname'?
	- 70:36      Did you really mean 'hostname'?
	- 72:127     Did you really mean 'hostname'?
	- 77:59      Did you really mean 'hostname'?
	- 102:112    Did you really mean 'Entra'?
	- 145:25     Did you really mean 'Entra'?
	- 147:5      Did you really mean 'Jira'?
	- 149:15     Did you really mean 'Jira'?
	- 166:116    Did you really mean 'hostname'?
	- 178:29     Did you really mean 'hostname'?
	- 198:33     Did you really mean 'Keycloak'?
	- 198:69     Did you really mean 'Automations'?
	- 247:131    Did you really mean 'hostnames'?
	- 268:4      Did you really mean 'Automations'?
	- 270:9      Did you really mean 'Automations'?
	- 272:64     Did you really mean 'Automations'?
	- 290:55     Did you really mean 'Keycloak'?
	- 290:105    Did you really mean 'Automations'?
	- 293:216    Did you really mean 'undecryptable'?


Found 29 suggested changes across 1 files in 747.07ms