fix: oss troubleshooting faqs (#940)

docs/logto-oss/troubleshooting-oss.mdx

@@ -9,9 +9,7 @@ sidebar_position: 9
 
 <summary>
 
-### \{#}
-
-My browser cannot load Admin Console (showing error <code>Crypto.subtle is unavailable...</code>)
+### My browser cannot load Admin Console (showing error `Crypto.subtle is unavailable...`) \{#my-browser-cannot-load-admin-console-showing-error-cryptosubtle-is-unavailable}
 
 </summary>
 
@@ -25,13 +23,7 @@ If you use HTTP with an IP address or custom domain, then the browser cannot loa
 
 <summary>
 
-### \{#-1}
-
-I'm using a custom domain, but my browser cannot load Admin Console (showing error{' '}
-
-{' '}
-
-<code>"code": "oidc.invalid_redirect_uri"</code>)
+### I'm using a custom domain, but my browser cannot load Admin Console (showing error `"code": "oidc.invalid_redirect_uri"`) \{#im-using-a-custom-domain-but-my-browser-cannot-load-admin-console-showing-error-code-oidcinvalid_redirect_uri}
 
 </summary>
 
@@ -43,13 +35,7 @@ If you are using a custom domain rather than `localhost`, you need to set the en
 
 <summary>
 
-### \{#-2}
-
-I'm using an HTTPS proxy (e.g., Nginx) in front of Logto, but I failed on sign-in (showing error{' '}
-
-{' '}
-
-<code>TypeError: Failed to fetch</code>)
+### I'm using an HTTPS proxy (e.g., Nginx) in front of Logto, but I failed on sign-in (showing error `TypeError: Failed to fetch`) \{#im-using-an-https-proxy-eg-nginx-in-front-of-logto-but-i-failed-on-sign-in-showing-error-typeerror-failed-to-fetch}
 
 </summary>
 
@@ -75,9 +61,7 @@ I'm using an HTTPS proxy (e.g., Nginx) in front of Logto, but I failed on sign-i
 
 <summary>
 
-### \{#-3}
-
-What is this again? <code>Error: Invalid id token</code>
+### What is this again? `Error: Invalid id token` \{#what-is-this-again-error-invalid-id-token}
 
 </summary>