qtcreator-cdbext: Update links

[michaelweghorn]

• switch from "http://" to "https://" URLs
• update path to changelogs which changed with qt-creator commit [1] ("Install and ship change logs")

Without these changes, the initial submission of Qt Creator CDB Extension 13.0.1 to Chocolatey failed automated validation:

qtcreator-cdbext has failed automated validation.

Requirements

Requirements represent the minimum quality of a package that is acceptable. When a package version has failed requirements, the package version requires fixing and/or response by the maintainer. Provided a Requirement has flagged correctly, it must be fixed before the package version can be approved. The exact same version should be uploaded during moderation review.

The MailingListUrl element in the nuspec file should be a valid Url. Please correct this [More...]

Guidelines

Guidelines are strong suggestions that improve the quality of a package version. These are considered something to fix for next time to increase the quality of the package. Over time Guidelines can become Requirements. A package version can be approved without addressing Guideline comments but will reduce the quality of the package.

In the ReleaseNotes element of the nuspec file a potentially invalid Url has been found. Recommendation is to fix this URL [More.]

[1] https://code.qt.io/cgit/qt-creator/qt-creator.git/commit/?id=b364cfde2375b2fa56b97e42346affecd2030080