Fix incorrect annotation usage for Module Container scanning

[MagicSweepy]

What

This PR fixes the problem about discoverContainers method in ModuleContainer class.

Implementation Details

In the original implementation, the discoverContainers method checked IGregTechModule interface:

if (IGregTechModule.class.isAssignableFrom(clazz)) {
    registerContainer((IModuleContainer) clazz.getConstructor().newInstance());
} else {
    // ...
}

But this method is used to scan all ModuleContainer annotation (with IModuleContainer interface), so it should be:

if (IModuleContainer.class.isAssignableFrom(clazz)) {
    registerContainer((IModuleContainer) clazz.getConstructor().newInstance());
} else {
    // ...
}

Then the method registerContainer can register the ModuleContainer well.

Outcome

When other mod used GregTechModule and ModuleContainer annotation, the ModuleManager class will scan and register it automatically, this is useful for addon mod which used modularization system.

[kumquat-ir]

Looks like this was a copy-paste error, good catch