Fix formatting by removing blank line

Removed an unnecessary blank line in the troubleshooting document.

Signed-off-by: CelloSerenity <[email protected]>

Author: CelloSerenity

docs/troubleshooting/troubleshooting.mdx

@@ -52,7 +52,6 @@ Another common issue during sign-in is not receiving a verification code when us
          4. Enter your Apple Account identifier (email address or phone number) and password (don't select "Sign in with iPhone" or "Sign in with Passkey").
          5. Apple will send you a verification code.
             - Use this code in SideStore to complete the sign-in process.
-
     </TabItem>
     <TabItem value="18" label="iOS/iPadOS 18.0.1 and below">
          1. Open the "Settings" app.