Component namespace MUST contain "\Component\"

[HermanPeeren]

Component namespace MUST contain "\Component\", followed by the extension name. Otherwise you would get the wrong component name in ComponentHelper::getComponentName().

Pull Request for Issue #24 .

Summary of Changes

Corrected the component namespace prefix in the text to contain "\Component\", followed by the component name. Added a summary of the 3 parts the component namespace prefix MUST consist of, mainly in chapters "Joomla 3 MVC vs Joomla 4 MVC" and "How things work Joomla 4.0 onwards" of the components section.

Added a paragraph on the use of the the addfieldprefix attribute to tell Joomla which namespace to use for custom form fields.

Reasoning

Although it is questionable that Joomla prescripts this format of a custom component namespace, which might not be necessary if ComponentHelper::getComponentName() would be changed, the goal is to provide a manual to build custom components that would work in the actual Joomla version.

[HermanPeeren]

Requested changes done.

[nikosdion]

Thank you very much!