Correct footer grammar + fix a typo
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- Found a bug or needs some improvements? Leave us an <a href="https://github.com/roscisz/TensorHive/issues">issue on Github</a>)
+ Want to report a bug or suggest an enhancement? Create an <a href="https://github.com/roscisz/TensorHive/issues">issue on Github</a>.
</v-flex>
</v-layout>
</v-footer>
