CloudMigrations: Update preview banner text (#91561)

* add link to docs page

* add link to docs

* a word

public/app/features/migrate-to-cloud/MigrateToCloud.tsx

@@ -24,7 +24,16 @@ export default function MigrateToCloud() {
         }
       >
         <Trans i18nKey="migrate-to-cloud.public-preview.message">
-          Help us improve this feature by providing feedback and reporting any issues.
+          No SLAs are available yet.{' '}
+          <a
+            href="https://grafana.com/docs/grafana-cloud/account-management/migration-guide/#grafana-cloud-migration-assistant"
+            target="_blank"
+            rel="noopener noreferrer"
+            className="external-link"
+          >
+            Visit our docs
+          </a>{' '}
+          to learn more about this feature!
         </Trans>
       </Alert>
       {config.cloudMigrationIsTarget ? <CloudPage /> : <OnPremPage />}

public/locales/en-US/grafana.json

@@ -1133,7 +1133,7 @@
     },
     "public-preview": {
       "button-text": "Give feedback",
-      "message": "Help us improve this feature by providing feedback and reporting any issues.",
+      "message": "No SLAs are available yet. <2>Visit our docs</2> to learn more about this feature!",
       "title": "Migrate to Grafana Cloud is in public preview"
     },
     "resource-error": {

public/locales/pseudo-LOCALE/grafana.json

@@ -1133,7 +1133,7 @@
     },
     "public-preview": {
       "button-text": "Ğįvę ƒęęđþäčĸ",
-      "message": "Ħęľp ūş įmpřővę ŧĥįş ƒęäŧūřę þy přővįđįʼnģ ƒęęđþäčĸ äʼnđ řępőřŧįʼnģ äʼny įşşūęş.",
+      "message": "Ńő ŜĿÅş äřę äväįľäþľę yęŧ. <2>Vįşįŧ őūř đőčş</2> ŧő ľęäřʼn mőřę äþőūŧ ŧĥįş ƒęäŧūřę!",
       "title": "Mįģřäŧę ŧő Ğřäƒäʼnä Cľőūđ įş įʼn pūþľįč přęvįęŵ"
     },
     "resource-error": {