Fix typo in dependency-resolution.md (#11465)

Removes a duplicated word.

Author: jaimesanz

docs/html/topics/dependency-resolution.md

@@ -155,7 +155,7 @@ how to inspect:
 - their release notes and changelogs from past versions
 
 During deployment, you can create a lockfile stating the exact package and
-version number for for each dependency of that package. You can create this
+version number for each dependency of that package. You can create this
 with [pip-tools](https://github.com/jazzband/pip-tools/).
 
 This means the "work" is done once during development process, and thus