Fix schain documentation tentatively

[sebhtml]

Why ?

In the Prebid Server documentation, it says that schain is read from source.ext.schain.
But OpenRTB 2.6 says it is read from source.schain. See OpenRTB 2.6, Section 3.2.2 - Object: Source and OpenRTB 2.6, Section 3.2.25 - Object: SupplyChain.

Furthermore, schain is in source.schain according to a discussion from 2022 in prebid/prebid-server#2139 :

The committee has agreed to move extended locations to the new locations. e.g. source.ext.schain to source.schain.

Deploy Previews:

• https://deploy-preview-5955--prebid-docs-preview.netlify.app/prebid-server/endpoints/openrtb2/pbs-endpoint-auction.html#supply-chain-support
• https://deploy-preview-5955--prebid-docs-preview.netlify.app/prebid-server/features/pbs-feature-idx
• https://deploy-preview-5955--prebid-docs-preview.netlify.app/prebid-server/developers/add-new-bidder-go
• https://deploy-preview-5955--prebid-docs-preview.netlify.app/prebid-server/developers/add-new-bidder-java

🏷 Type of documentation

• new bid adapter
• update bid adapter
• new feature
• text edit only (wording, typos)
• bugfix (code examples)
• new examples
• Prebid Server documentation

📋 Checklist

• Related pull requests in prebid.js or server are linked -> Paste link in this list or reference it on the PR itself
• For new adapters check submitting your adapter docs

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[muuki88]

Funny coincidence! I just worked on this yesterday.

There are some examples that show case the old location. Would you mind adapting those as well? This mostly affects AMP & App examples involving stored requests.

• https://docs.prebid.org/dev-docs/show-prebid-ads-on-amp-pages.html#prebid-server-stored-request

I wasn't able to find any other instances on the spot.

[sebhtml]

Funny coincidence! I just worked on this yesterday.

There are some examples that show case the old location. Would you mind adapting those as well? This mostly affects AMP & App examples involving stored requests.

• https://docs.prebid.org/dev-docs/show-prebid-ads-on-amp-pages.html#prebid-server-stored-request

I wasn't able to find any other instances on the spot.

hi @muuki88

I modified the page that you pointed: 342b738

I also found another instance in the auction request documentation of Prebid Server: dad47fe