Update/cta to get started (#11594)

* update defs

* update cta to get started

* Update docs/product/tracing/index.mdx

* Delete docs/product/tracing/index.mdx

Author: lizokm

src/components/header.tsx

@@ -73,7 +73,7 @@ export function Header({pathname, searchPlatforms, noSearch}: Props) {
               href="https://sentry.io/signup/"
               className="transition-all duration-300 ease-in-out hover:bg-gradient-to-r hover:from-[#fa7faa] hover:via-[#ff9691] hover:to-[#ffb287]"
             >
-              Start For Free
+              Get Started
             </NavLink>
           </Fragment>
           <ThemeToggle />

src/components/mobileMenu/index.tsx

@@ -62,7 +62,7 @@ export function MobileMenu({pathname, searchPlatforms}: Props) {
                 <Link href="https://sentry.io/">Sign In</Link>
               </DropdownMenu.Item>
               <DropdownMenu.Item className={styles.DropdownMenuItem} asChild>
-                <Link href="https://sentry.io/signup/">Start For Free</Link>
+                <Link href="https://sentry.io/signup/">Get Started</Link>
               </DropdownMenu.Item>
             </DropdownMenu.Content>
           </Theme>