update envs and cypress test

Author: DaltheCow

ui/.env.development

@@ -1,4 +1,4 @@
-ASSET_PREFIX=https://review.neuralmagic.com/guidellm-ui/dev/_next
-BASE_PATH=/guidellm-ui/dev
+ASSET_PREFIX=https://neuralmagic.github.io/guidellm/dev
+BASE_PATH=/dev
 NEXT_PUBLIC_FEATURES={"blocks":{"workloadDetails":false,"costSection":false}}
 NEXT_PUBLIC_USE_MOCK_API=true

ui/.env.production

@@ -1 +1,2 @@
-ASSET_PREFIX=https://guidellm.neuralmagic.com
+ASSET_PREFIX=https://neuralmagic.github.io/guidellm/prod
+BASE_PATH=/prod

ui/.env.staging

@@ -1 +1,2 @@
-ASSET_PREFIX=https://staging.guidellm.neuralmagic.com
+ASSET_PREFIX=https://neuralmagic.github.io/guidellm/staging
+BASE_PATH=/staging

ui/cypress/e2e/homepage.cy.ts

@@ -1,6 +1,6 @@
 describe('Check if text exists on the page', () => {
   it('should find the text on the page', () => {
     cy.visit('http://localhost:3000'); // Replace with your dev server URL
-    cy.contains('nm-vllm LLM Guidance').should('exist'); // Replace with the text you're checking for
+    cy.contains('Guidellm').should('exist'); // Replace with the text you're checking for
   });
 });