Fixed typo "MediWiki" to "MediaWiki" in core.
Bug: T201491
Change-Id: I55cb4af63b72cfa08de079544c43ae9f1366a457
* - 'implementation': The name of the implementation used
* - 'vendor': The development group, vendor or developer of the implementation.
* - 'upstreamSupported': The minimum version of the implementation supported by the named vendor.
- * - 'minSupported': The minimum version supported by MediWiki
+ * - 'minSupported': The minimum version supported by MediaWiki
* - 'upgradeURL': The URL to the website of the implementation that contains
* upgrade/installation instructions.
*/