chore: copy updates to messages.json (#37810)

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## **Description**

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Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
questions:
1. What is the reason for the change? Made small copy tweaks around case
consistency and grammar.
2. What is the improvement/solution? Minor language changes
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Various content updates based on our [content
guidelines](https://www.notion.so/metamask-consensys/MetaMask-Content-Design-Style-Guide-7d0b7579786540afbe02780ebb203254?source=copy_link)

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## **Changelog**

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CHANGELOG entry: N/A

## **Related issues**

Fixes: N/A

## **Manual testing steps**

Only made copy updates.

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### **Before**

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### **After**

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## **Pre-merge author checklist**

- [x] I've followed [MetaMask Contributor
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## **Pre-merge reviewer checklist**

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Refines grammar/punctuation in en/en_GB locale strings and updates
related tests/snapshots to match.
> 
> - **i18n (copy tweaks)**
> - Standardize phrasing and punctuation in
`app/_locales/en/messages.json` and `app/_locales/en_GB/messages.json`
(e.g., `All-time high/low`, remove trailing punctuation in some labels,
lowercase "Price impact" tooltip title, add period to smart account
switch description, capitalize URL in NFT disclaimer, remove exclamation
in install complete, normalize "Learn more").
> - **Tests**
> - Adjust e2e expectation for smart account upgrade text in
`account-modal-account-type-change.spec.ts`.
> - Update confirmation title test to expect period in smart account
switch description.
> - Refresh snapshots for NFT details disclaimer and onboarding
create-password link text.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
477c5ac. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: georgewrmarshall <[email protected]>

Author: alidotforrest

app/_locales/en/messages.json

@@ -45,7 +45,7 @@ describe.skip('Switch Modal - Switch Account', function (this: Suite) {
 
         const upgradeAndBatchTxConfirmation = new Eip7702AndSendCalls(driver);
         await upgradeAndBatchTxConfirmation.checkExpectedTxTypeIsDisplayed(
-          "You're switching to a smart account",
+          "You're switching to a smart account.",
         );
         await upgradeAndBatchTxConfirmation.checkExpectedInteractingWithIsDisplayed(
           'Account 1',

app/_locales/en_GB/messages.json

@@ -181,7 +181,7 @@ exports[`NFT Details should match minimal props and state snapshot 1`] = `
             <p
               class="mm-box mm-text mm-text--body-xs mm-box--color-text-alternative"
             >
-              Disclaimer: MetaMask pulls the media file from the source url. This url sometimes gets changed by the marketplace on which the NFT was minted.
+              Disclaimer: MetaMask pulls the media file from the source URL. This URL sometimes gets changed by the marketplace on which the NFT was minted.
             </p>
           </div>
         </div>

test/e2e/tests/account/account-modal-account-type-change.spec.ts

@@ -110,7 +110,7 @@ describe('ConfirmTitle', () => {
 
     expect(getByText('Account update')).toBeInTheDocument();
     expect(
-      getByText("You're switching to a smart account"),
+      getByText("You're switching to a smart account."),
     ).toBeInTheDocument();
   });
 

ui/components/app/assets/nfts/nft-details/__snapshots__/nft-details.test.js.snap

@@ -146,7 +146,7 @@ exports[`Onboarding Create Password Render should match snapshot 1`] = `
                 <span
                   class="create-password__link-text"
                 >
-                  Learn more.
+                  Learn more
                 </span>
               </a>
             </p>