docs: Update funding information

.github/FUNDING.yml

@@ -1,12 +1,2 @@
-# These are supported funding model platforms
-
-github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
-patreon: # Replace with a single Patreon username
-open_collective: # Replace with a single Open Collective username
-ko_fi: # Replace with a single Ko-fi username
-tidelift: "npm/css-what"
-community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
-liberapay: # Replace with a single Liberapay username
-issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
-custom: # Replace with a single custom sponsorship URL
+github: [fb55]
+tidelift: npm/css-what

package.json

@@ -3,6 +3,7 @@
     "name": "css-what",
     "description": "a CSS selector parser",
     "version": "3.4.0",
+    "funding": "https://github.com/sponsors/fb55",
     "repository": {
         "url": "https://github.com/fb55/css-what"
     },