fix: rename subcribeToDocuments to subscribeToDocuments

[Yash2004Codes]

Description
Problem solved : There is a private method subscribeToDocuments defined in each of these three services file with typo mistake as subcribeToDocuments` .Now it has been fixed.
Any issue raised before opening this PR :No as this issue is very straightforward.I directly opened its PR !

• Renamed subcribeToDocuments to subscribeToDocuments in SpecificationService.
• Renamed subcribeToDocuments to subscribeToDocuments in MonacoService.
• Renamed subcribeToDocuments to subscribeToDocuments in EditorService.

Screenshots :

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
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0.0% Coverage on New Code
0.0% Duplication on New Code

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