Fix duplicate routes error

[nibble0101]

This PR fixes the duplicate routes error.

warn Duplicate routes found! This could lead to non-deterministic routing behavior

Attempting to create page at /docs/howto/file-box, but a page already exists at this route
Attempting to create page at /docs/specs/, but a page already exists at this route

Essentially the first warning is due to two files in the howto directory with the same name file-box.

I have also realized the file naming is not consistent with the side-bar label making it more difficult to maintain. The file is file-box.mdx but the side-bar label is Send and receive files. However if the side-bar label is consistent with the file name it is easier to locate which .md or .mdx one should edit to fix an error. So I have changed the file-names accordingly. Let me know what others think.

There were two similar file-box files. One is file-box.md and another is file-box.mdx. I am not sure why? I think it is better to decide which one is the required one and the other one needs to be deleted otherwise they become a source of confusion.

@huan I have failed to reproduce the last two errors.

#1388

[huan]

Thank you very much for the quick response!

I saw you renamed the file-box, but as my understanding, we will have a file/id named file-box in our folders correct?

Could you please help us to make sure that there are no orphan files in the folders? Because it seems that we have multiple file-box now.

And one more thing that, I think the file-box name is better for the file-name/id so please use this name if we can.

Thank you very much!

[nibble0101]

Could you please help us to make sure that there are no orphan files in the folders? Because it seems that we have multiple file-box now.

@huan Actually the warning was due to two files named file-box in the same directory. One was named file-box.md and the other file-box.mdx. I don't know why there are two files in the first place otherwise I would have deleted one. I have reverted the file name to file-box.mdx since you asked to retain the file names and renamed the other one to file-box-two.md to remove the warning .

[huan]

LGTM