Resolve "repo_name must not contain hyphens or other illegal characters and project_short_name is missleading"

Closes #3 (closed)

{{cookiecutter.repo_name}}/.gitlab-ci.yml

@@ -37,7 +37,7 @@ diagram:
     - "./gradlew generateGrammarDiagrams"
   artifacts:
     paths:
-      - "src/gen/resources/{{cookiecutter.project_short_name}}Grammar.png"
+      - "src/gen/resources/{{cookiecutter.grammar_name}}Grammar.png"
 
 ragdoc_build:
   image: "git-st.inf.tu-dresden.de:4567/jastadd/ragdoc-builder"
@@ -80,7 +80,7 @@ pages:
     - pip install -r pages/requirements.txt
   script:
     - mkdir pages/docs/diagrams
-    - cp src/gen/resources/{{cookiecutter.project_short_name}}Grammar.png pages/docs/diagrams/
+    - cp src/gen/resources/{{cookiecutter.grammar_name}}Grammar.png pages/docs/diagrams/
     - cd pages && mkdocs build
   artifacts:
     paths: