fix build error

Author: devalog

.github/workflows/build.yaml

@@ -27,7 +27,6 @@ jobs:
         pandoc resume.md -o resume.pdf \
           --pdf-engine=pdflatex \
           --variable geometry:margin=1in \
-          --variable fontfamily=serif \
           --variable fontsize=11pt \
           --variable linestretch=1.15