fix: extra space in link before punctuation (#89)

Currently - there is an extra space that renders in the blogs if there
is punctuation right after a link.

Example:
![Screenshot 2023-09-05 at 2 21 08
PM](https://github.com/mesosphere/d2iq-engineering-blog/assets/5703649/3309e48e-e091-44b1-8b27-e3dbb27bec3c)

Found at the bottom of this post:
https://eng.d2iq.com/blog/profiling-kubernetes-controllers-with-pprof/

It appears it's because we added this:

https://github.com/mesosphere/d2iq-engineering-blog/blob/main/themes/casperv5/layouts/_default/_markup/render-link.html

This is a great add, because it will automatically make sure that links
will go to a new tab/window.
However, it adds an extra space if the link is followed by punctuation
(`,` `.` etc.)
This probably wasn't found before, because the markdown will get rid of
any double/extra spaces if it's just on a normal line, followed by other
words. BUT, it looks like it adds it here because there's an extra line
that's added at the bottom of this html file.

Getting rid of the new line gets rid of this nit picky sort of thing
(from building it locally):
![Screenshot 2023-09-05 at 2 21 32
PM](https://github.com/mesosphere/d2iq-engineering-blog/assets/5703649/2df4e85d-09e0-4fc9-945c-83464468eb53)

themes/casperv5/layouts/_default/_markup/render-link.html

@@ -1 +1 @@
-<a href="{{ .Destination | safeURL }}"{{ with .Title }} title="{{ . }}"{{ end }}{{ if strings.HasPrefix .Destination "http" }} target="_blank" rel="noopener"{{ end }}>{{ .Text | safeHTML }}</a>
+<a href="{{ .Destination | safeURL }}"{{ with .Title }} title="{{ . }}"{{ end }}{{ if strings.HasPrefix .Destination "http" }} target="_blank" rel="noopener"{{ end }}>{{ .Text | safeHTML }}</a>