Refactor: Update model attribute name in ProjectPage create method

src/main/java/com/maradona/backend/controllers/page/ProjectPage.java

@@ -50,7 +50,7 @@ public class ProjectPage {
    */
   @GetMapping("/create")
   public String create(Model model) {
-    model.addAttribute("projects", new Project());
+    model.addAttribute("project", new Project());
     return "/pages/projects/create";
   }
 }