docs(a11y): update badge text to an exact match of content (#4655)

* docs(preview): add preview to README

* docs(a11y): update badge text to an exact match of content

Author: MYoung25

packages/core-theme-documentation-generator/src/theme.tsx

@@ -143,7 +143,7 @@ class SdkThemeContext extends DefaultThemeRenderContext {
                 return res.json()
               })
               .then(({ version }) => {
-                versionEl.alt = "NPM latest version V" + version
+                versionEl.alt = "npm@latest v" + version
               })
               .catch(err => {
                 console.error(err)
@@ -286,8 +286,10 @@ class SdkThemeContext extends DefaultThemeRenderContext {
           <div class="documentation-developer-preview">
             <h2>New API Documentation - Developer Preview Available</h2>
             <p>
-              We are excited to announce the <a href="https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/preview/">developer preview</a> of our new API documentation
-              for AWS SDK for JavaScript v3. Please follow instructions on the landing page to leave us your feedback.
+              We are excited to announce the{" "}
+              <a href="https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/preview/">developer preview</a> of our new
+              API documentation for AWS SDK for JavaScript v3. Please follow instructions on the landing page to leave
+              us your feedback.
             </p>
           </div>
           {oldHeader(props)}