Fix formatting errors
The <br> was causing the markdown to not render the images and links correct
<img src='doc/nommy_cropped_smaller.png' width='350' title='Nommy, the snacky otter'>
-<br>
+
[Command-Line Tour](doc/cli-tour.md)&nbsp; | &nbsp;[Go SDK Tour](doc/go-tour.md)&nbsp; | &nbsp;[Documentation](doc/index.md)&nbsp; | &nbsp;[Project Status](#status)&nbsp; | &nbsp;[Download](https://s3-us-west-2.amazonaws.com/downloadstable.noms.io/index.html?prefix=jobs/NomsBuildGoBinaries-v7/)
<br><br>
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