sort articles by alphabetical order instead of date of publication

Makefile

@@ -85,7 +85,7 @@ blog/index.html: $(ARTICLES) $(TAGFILES) $(addprefix templates/,$(addsuffix .htm
 	for f in $(ARTICLES); do \
 		printf '%s ' "$$f"; \
 		git log -n 1 --diff-filter=A --date="format:%s $(BLOG_DATE_FORMAT_INDEX)" --pretty=format:'%ad%n' -- "$$f"; \
-	done | sort -k2nr | cut -d" " -f1,3- | while IFS=" " read -r FILE DATE; do \
+	done | sort | cut -d" " -f1,3- | while IFS=" " read -r FILE DATE; do \
 		"$$first" || envsubst < templates/article_separator.html; \
 		URL="`printf '%s' "\$$FILE" | sed 's,^$(BLOG_SRC)/\(.*\).md,\1,'`.html" \
 		DATE="$$DATE" \
@@ -119,7 +119,7 @@ blog/@%.html: $(TAGFILES) $(addprefix templates/,$(addsuffix .html,header tag_in
 	for f in $(shell grep -FH '$*' $(TAGFILES) | sed 's,^tags/\([^:]*\):.*,$(BLOG_SRC)/\1.md,'); do \
 		printf '%s ' "$$f"; \
 		git log -n 1 --diff-filter=A --date="format:%s $(BLOG_DATE_FORMAT_INDEX)" --pretty=format:'%ad%n' -- "$$f"; \
-	done | sort -k2nr | cut -d" " -f1,3- | while IFS=" " read -r FILE DATE; do \
+	done | sort | cut -d" " -f1,3- | while IFS=" " read -r FILE DATE; do \
 		"$$first" || envsubst < templates/article_separator.html; \
 		URL="`printf '%s' "\$$FILE" | sed 's,^$(BLOG_SRC)/\(.*\).md,\1,'`.html" \
 		DATE="$$DATE" \