fix: revert custom domain to restore javaamazonas.github.io

Merging the CNAME (javaamazonas.com.br) activated GitHub Pages'
automatic redirect from javaamazonas.github.io to the custom domain,
but DNS at the registrar isn't propagated yet, so the site is
currently unreachable. Reverting src/CNAME and the angular.json
assets entry restores the site on the default github.io domain.

Re-add once DNS is confirmed resolving to GitHub Pages' IPs.

Author: samuelsonbrito

angular.json

@@ -18,7 +18,7 @@
             "browser": "src/main.ts",
             "polyfills": ["zone.js"],
             "tsConfig": "tsconfig.app.json",
-            "assets": ["src/favicon.ico", "src/CNAME", "src/assets"],
+            "assets": ["src/favicon.ico", "src/assets"],
             "styles": [
               "src/styles.css"
             ],