[ML] Update external URLs for E5 models (#172796)

## Summary

Adds external URLs for each version of the E5 model.

<img width="1024" alt="image"
src="785eaddd-f081-4be2-b775-1a79cf74e6b8">


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [x] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [x] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))

x-pack/plugins/ml/server/models/model_management/model_provider.test.ts

@@ -87,6 +87,7 @@ describe('modelsProvider', () => {
           version: 1,
           modelName: 'e5',
           license: 'MIT',
+          licenseUrl: 'https://huggingface.co/elastic/multilingual-e5-small',
           type: ['pytorch', 'text_embedding'],
         },
         {
@@ -100,6 +101,7 @@ describe('modelsProvider', () => {
           version: 1,
           modelName: 'e5',
           license: 'MIT',
+          licenseUrl: 'https://huggingface.co/elastic/multilingual-e5-small_linux-x86_64',
           type: ['pytorch', 'text_embedding'],
         },
       ]);
@@ -167,6 +169,7 @@ describe('modelsProvider', () => {
           modelName: 'e5',
           type: ['pytorch', 'text_embedding'],
           license: 'MIT',
+          licenseUrl: 'https://huggingface.co/elastic/multilingual-e5-small',
         },
         {
           arch: 'amd64',
@@ -179,6 +182,7 @@ describe('modelsProvider', () => {
           modelName: 'e5',
           type: ['pytorch', 'text_embedding'],
           license: 'MIT',
+          licenseUrl: 'https://huggingface.co/elastic/multilingual-e5-small_linux-x86_64',
         },
       ]);
     });