Create MAML2Yaml subfolder to store monikerMapping.json

[Saisang]

Create a MAML2Yaml subfolder to store monikerMapping.json, and update path in config. This enforces the docset content built by MAML2Yaml instead of other tools. For details, see https://dev.azure.com/msft-skilling/Content/_workitems/edit/437022

[learn-build-service-prod]

Learn Build status updates of commit 6317e3e:

✅ Validation status: passed

File	Status	Preview URL	Details
.openpublishing.publish.config.json	✅Succeeded
sharepoint/mapping/MAML2Yaml/monikerMapping.json	✅Succeeded
sharepoint/mapping/monikerMapping.json	✅Succeeded	n/a (file deleted or renamed)

For more details, please refer to the build report.

[xmdanni]

@dstrome could you please review and merge this PR? Thanks.

cc @mtrilbybassett @sdwheeler

[Saisang]

@sdwheeler Could you help to merge this and publish? I do not have that perm.

[Saisang]

@Ruchika-mittal01 Hi, Could you help to merge this and ship to live? I do not have that perm.

[learn-build-service-prod]

Learn Build status updates of commit 118e6a3:

✅ Validation status: passed

File	Status	Preview URL	Details
.openpublishing.publish.config.json	✅Succeeded
sharepoint/mapping/MAML2Yaml/monikerMapping.json	✅Succeeded
sharepoint/mapping/monikerMapping.json	✅Succeeded	n/a (file deleted or renamed)

For more details, please refer to the build report.

[Ruchika-mittal01]

@Ruchika-mittal01 Hi, Could you help to merge this and ship to live? I do not have that perm.

Hi @Saisang, Hi, Could you please add the sign-off label to the PR so we can proceed with the review?

[Saisang]

#sign-off