:wrench: Add pdf format in the file list to be distributed

makefile

@@ -11,7 +11,7 @@ GEN_MDS := $(SRC_MDS:%.src.md=%.gen.html)
 GEN_FILES := $(GEN_HTMLS) $(GEN_MDS)
 
 INCLUDED_FILES := $(shell find src/include -type f)
-EMBEDDED_FILES := $(shell find src -name '*.png' -or -name '*.svg')
+EMBEDDED_FILES := $(shell find src -name '*.png' -or -name '*.svg' -or -name '*.pdf')
 
 DIST_GEN_FILES := $(GEN_FILES:src/%.gen.html=$(DIST_DIR)/%.html)
 DIST_INC_FILES := $(INCLUDED_FILES:src/%=$(DIST_DIR)/%)