Update secrets-management.md

Add some more prefixes that we found out was not allowed

Author: jesp209i

umbraco-cloud/set-up/project-settings/secrets-management.md

@@ -128,6 +128,20 @@ The list consists of:
 * `DATABASE_`
 * `WORDPRESS_`
 * `MACHINEKEY_`
+* `SQLCONNSTR`
+* `SQLAZURECONNSTR_`
+* `POSTGRESQLCONNSTR_`
+* `CUSTOMCONNSTR_`
+* `MYSQLCONNSTR_`
+* `AZUREFILESSTORAGE_`
+* `AZUREBLOBSTORAGE_`
+* `NOTIFICATIONHUBCONNSTR_`
+* `SERVICEBUSCONNSTR_`
+* `EVENTHUBCONNSTR_`
+* `DOCDBCONNSTR_`
+* `REDISCACHECONNSTR_`	
+* `FILESHARESTORAGE_`
+* and more...
 
 ### Accepted Prefixes