SimpleFooter hardcodes links to English Medicare pages

[Josh68]

Describe the bug
It appears that many Medicare pages now use the subdomain es. for Spanish-language translations. All of the links in the SimpleFooter component are hardcoded to use the www. subdomain, so that no matter what values we set (query params in the URL, using setLanguage from CMSDS, or updating the html lang attribute), links go to English-only pages.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://www.medicare.gov/plan-compare/#/?lang=es (or, as we slowly migrate DS versions, you can also look at https://test.medicare.gov/plan-compare/preview/3351/#/?lang=es, as long as it's available). See Additional context, below.
2. Click on any link in the footer
3. The linked page is in English

Expected behavior
The linked page is in Spanish

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• N/A
• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• N/A
• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Source code indicates that these values are all still currently hardcoded