style: update include guards and incl statements to follow google style guide

tooling/pipeline/includes/json_handling/pretty_print.h

@@ -9,10 +9,11 @@
  * readable output. Adapted from Boost JSON library examples.
  */
 
-#include <boost/json.hpp>
 #include <ostream>
 #include <string>
 
+#include <boost/json.hpp>
+
 /**
  * @brief Pretty-prints a JSON value to an output stream with indentation.
  *
@@ -106,4 +107,4 @@ inline void PrettyPrint(std::ostream& outstream,
   }
 }
 
-#endif
+#endif  // BIERGARTEN_PIPELINE_INCLUDES_JSON_HANDLING_PRETTY_PRINT_H_