Update docs/overview/index.md

Co-authored-by: David Glick <[email protected]>

Author: fredvd

docs/overview/index.md

@@ -22,7 +22,7 @@ Additionally, Plone is supported by a strong community of users and developers w
 
 Plone has the maturity, stability, and reliability of an application maintained by open source developers with decades of experience, while continually evolving and adapting to modern technology.
 
-Lots of customizations can be made trough-the-web, such as creating content types, themes, workflows, and much more.
+Lots of customizations can be made through-the-web, such as creating content types, themes, workflows, and much more.
 A full file system based development workflow is also possible.
 Plone can be extended and used as a framework on which to build custom CMS-like solutions.