Update homepage and links in RegistrationStep4 component

package.json

@@ -2,7 +2,7 @@
   "name": "frontend",
   "version": "0.1.0",
   "private": true,
-  "homepage": "/membership",
+  "homepage": "/become-a-member",
   "dependencies": {
     "@fontsource/dm-sans": "^5.2.8",
     "@fontsource/fraunces": "^5.2.9",

src/components/registration/RegistrationStep4.js

@@ -86,7 +86,7 @@ const RegistrationStep4 = ({ formData, handleInputChange }) => {
             <label htmlFor="accepts_tos" className="text-sm text-gray-700" style={{ fontFamily: "'Nunito Sans', sans-serif" }}>
               I agree to the{' '}
               <a
-                href="/membership/terms-of-service"
+                href="/become-a-member/terms-of-service"
                 target="_blank"
                 rel="noopener noreferrer"
                 className="text-[#664fa3] hover:text-[#422268] font-semibold underline"
@@ -95,7 +95,7 @@ const RegistrationStep4 = ({ formData, handleInputChange }) => {
               </a>
               {' '}and{' '}
               <a
-                href="/membership/privacy-policy"
+                href="become-a-member/privacy-policy"
                 target="_blank"
                 rel="noopener noreferrer"
                 className="text-[#664fa3] hover:text-[#422268] font-semibold underline"