Fix typo in welcome blog post (pypi#13252)

* Fix typo in welcome blog post

comparitively -> comparatively

* Fix dev docs path

Author: drewbrew

CONTRIBUTING.rst

@@ -11,5 +11,5 @@ Examples of contributions include:
 * Patch reviews.
 
 Extensive contribution guidelines are available in the repository at
-``docs/development/index.rst`` or
+``docs/dev/index.rst`` or
 `online <https://warehouse.pypa.io/development/>`_.

docs/blog/posts/2023-03-21-welcome-to-the-pypi-blog.md

@@ -46,7 +46,7 @@ secure since 2013._
 
 [^1]: We're thrifty and picky about what we run, but
 [Fastly](https://www.fastly.com/fast-forward) is the single most
-important factor allowing us to get by with comparitively few
+important factor allowing us to get by with comparatively few
 resources for our backends.
 [^2]: That was until we welcomed Mike Fiedler as an admin in 2023.
 [^3]: The PyPI Administrator team is