Update development_guide.md
`upsrem` to `upstream`
MODIFY
docs/pangeo_forge_recipes/development/development_guide.md
docs/pangeo_forge_recipes/development/development_guide.md
@@ -137,7 +137,7 @@ When you are ready to make changes.
- Once your PR is merged:
```bash
git checkout master
- git fetch upsream
+ git fetch upstream
git rebase upstream/master
# clean up feature branch
git branch -d my-cool-feature

Update development_guide.md (#396)

`upsrem` to `upstream`