* Update bip-0343.mediawiki
As a co-author I would like to move this BIP's status to Closed due to its current irrelevance and lack of any known deployments on the network.
If I could I would delete it fully, or better yet go back in time to prevent it from being written.
* bip343: Fix table entry for move to Closed
* bip343: Record Close reason
---------
Co-authored-by: Murch <murch@murch.one>
```
sed -z -i 's/Author: /Authors: /' bip-0*.md
sed -z -i 's/Author: /Authors: /' bip-0*.mediawiki
```
Also align correctly in case of multiple authors.
```
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.md
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.mediawiki
```
After the scripted changes, the changes to BIP-40, BIP-41, and BIP-63
were undone, because it breaks CI.
These three BIPs only exist conceptually and their proposal documents
are missing which causes changes to them ot break the CI. I defer the
changes to these BIPs to a separate pull request to get CI to pass.
