Comment 1 for bug 1092701

Thank you for taking the time to report this bug and helping to make Ubuntu better. Indeed the software-center help complains about the xml when opening it.

Software-center is translated in Launchpad, so I believe it should be sufficient to remove the space from the translations there. The new translations will then be synced to the package and rolled out at some point. The two strings you mention above corresponds to the following translations:
https://translations.launchpad.net/ubuntu/quantal/+source/software-center/+pots/software-center-doc/nb/49/+translate
https://translations.launchpad.net/ubuntu/quantal/+source/software-center/+pots/software-center-doc/nb/60/+translate

I've removed the spaces from these two.

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Unrelated info: if you want to get started pushing code to Launchpad, please see https://help.launchpad.net/YourAccount/CreatingAnSSHKeyPair and https://help.launchpad.net/Code/UploadingABranch.
I'd also like to mention Ubuntu Norge on Launchpad (https://launchpad.net/~ubuntu-no). We have an IRC channel as well, #ubuntu-no, so if you have any other questions or just want to say hi feel free to stop by. :)