Try to fix CI script

.gitlab-ci.yml

@@ -2,9 +2,9 @@ before_script:
   - stack --version
   - stack setup
 
-test:
+build:
   script:
-    - stack test
+    - stack build
 
 formatting:
   script:

app/decker.hs

@@ -171,7 +171,7 @@ main = do
             "pdflatex -halt-on-error -interaction batchmode"
             ["-output-directory", dir]
             src
-        () <-cmd "pdf2svg" pdf out
+        () <- cmd "pdf2svg" pdf out
         cmd "rm" pdf
     --
     phony "clean" $ do

test/decks/rendered-code-deck.md

@@ -11,6 +11,7 @@ Code blocks can be rendered as SVG images
 
 -   Graphviz (dot)
 -   Gnuplot
+-   Tikz
 
 # Embedded Graphviz Code (SVG)