Merge pull request #45 from neoarz/patch-2

Update faq.mdx

docs/faq.mdx

@@ -126,7 +126,7 @@ Don't panic! Re-sideload the apps without removing them from your device, and yo
 
 ### I'm unable to select my pairing file with any file type
 
-Apple's file system isn't exactly perfect, and sometimes it will just not allow you to select files from within apps. You can try moving the pairing file to the root directory of the SideStore folder in the Files app in "On My iPhone/iPad", and naming it `ALTPairingFile.mobiledevicepairing`. Note that it is case sensitive.
+Make sure your pairing file's extension ends with `.mobiledevicepairing` or `.plist`. If it doesn't, double check to see if you had zipped your pairing file before sending it to your phone. Failing to do so may lead to the file breaking during transport. Also, when signing Sidestore with a certificate, you won't be able to select the pairing file from within app. You can try moving the pairing file to the root directory of the SideStore folder in the Files app in "On My iPhone/iPad", and naming it `ALTPairingFile.mobiledevicepairing`. If you do not see the Sidestore folder in the files app, connect your phone to your computer, and you can drag and drop the pairing file to the files of the Sidestore app. Ensure to change it to name mentioned above. Note that it is case sensitive.
 
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