Minor punctuation update

[seanhatton]

In https://repronim.netlify.app/resources/tutorials/pond-lake/ in the top of the "Step 1: Set up your local ReproPond using Neurobagel " please update the text to read better (updates in italics):

Here we are going to mount your NIDM file (nidm.ttl) containing the study data using Neurobagel to create a local ReproPond.

First we install the Neurobagel Docker. Please refer to https://neurobagel.org/getting_started/ for full details.

Start by cloning the Neurobagel recipes:

[asmacdo]

@seanhatton would you be interested in filing a PR? I'm happy to walk you through that process if that would be helpful :)

[seanhatton]

Created PR #227