Fix typo in example in section: Running a patch build of a given PR

Author: caseyclements

README.md

@@ -175,5 +175,5 @@ as they often have to build for a more broad set of scenarios than the original
 Rather than making a new branch and modifying a `config.env` file, you can run a patch build as follows:
 
 ```bash
-evergreen patch -p ai-ml-pipelin-testing --param REPO_ORG="<my-org>" --param REPO_BRANCH="<my-branch>" -y "<my-message>"
+evergreen patch -p ai-ml-pipeline-testing --param REPO_ORG="<my-org>" --param REPO_BRANCH="<my-branch>" -y "<my-message>"
 ```