fix: call python templates variable

Author: Nelson Ochoa

templates/python/build.sh

@@ -2,7 +2,7 @@
 
 python_templates=$(ls -d */ | sed 's/\//\n/g')
 current_directory=`pwd`
-for template in $maven_templates; do
+for template in $python_templates; do
    cd $current_directory/$template
    echo "Building $template template"
 done