Resolve "Add description/help text for input parameters in README"

Closes #2 (closed)

README.md

@@ -16,7 +16,7 @@ Usage:
 | `repo_name` |  `"test_repo"` | Name used in the URL of the project | Initialize `project_url`, `repo_url`, Generated directory |
 | `project_name` |  `"My New Relational RAG Project"` | (Long) name of the project | Title in README, pages |
 | `project_short_name` |  `"NewRelAST"` | (Short) name of the project | Name of the grammar, partly name of the test |
-| `project_slug` |  `"{{cookiecutter.project_name|replace(' ','_')|lower}}"` | (pre-computed) canonical name of the project without spaces | Last part of the Java package, prefix of version file, name of the published artifact |
+| `project_slug` |  `"{{cookiecutter.project_name\|replace(' ','_')\|lower}}"` | (pre-computed) canonical name of the project without spaces | Last part of the Java package, prefix of version file, name of the published artifact |
 | `package` |  `"jastadd"` | Namespace used in the URL of the project | where? |
 | `project_url` |  `"git@git-st.inf.tu-dresden.de:{{cookiecutter.package}}/{{cookiecutter.repo_name}}.git"` | (pre-computed) URL to clone the project using SSH | Setting git `origin` remote |
 | `repo_url` |  `"https://git-st.inf.tu-dresden.de/{{cookiecutter.package}}/{{cookiecutter.repo_name}}"` | (pre-computed) URL of the project | Back-link to repository in pages |