Model extension guide update

[neha-sharma-geoai]

Updated guide with updated scripts.

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[neha-sharma-geoai]

Issue - https://github.com/ArcGIS/geosaurus/issues/12906

[jyaistMap]

@neha-sharma-geoai @priyankatuteja @vikashranjan26

• The new RT-DetrV2 Object Detector guide was merged into master with #2250 so it was subsequently merged into next to sync those branches. Merging this full PR would be redundant. The guide is already available on production since it was merged into master, but there is no Table of Contents heading for it since no PR was made to the python-api-doc repo into the ../documentation/python/guide.navigation.yml file. Please submit a PR into the appropriate heading section so a heading is added to the documentation.
  

  • Can you remove the guide file and the images from this PR so we can just merge updates to the using model extension guide?

• Please submit a PR to the ../documentation/python/guide.navigation.yml into the appropriate section for the model extension guide. It is currently available on production but there is no Table of Contents heading for it.
  

[neha-sharma-geoai]

@jyaistMap
I have updated the PR to update only the required file. Pls check.
Is it ok to merge this PR with the next branch, or should it be merged with the master directly?

[priyankatuteja]

@neha-sharma-geoai this needs to be done

Please submit a PR to the ../documentation/python/guide.navigation.yml into the appropriate section for the model extension guide. It is currently available on production but there is no Table of Contents heading for it.
image

[neha-sharma-geoai]

#2257
Merged with this PR.