;dev: make site-watch: fix runaway recursion, be more verbose

Makefile

@@ -861,7 +861,7 @@ LOCALSITEURL=http://localhost:3000/dev/hledger.html
 site-watch: $(call def-help,site-watch, open a browser on the website (in ./site) and rerender when docs or web pages change )
 	@make -s Shake
 	@(printf "\nbrowser will open in $(BROWSEDELAY)s (adjust BROWSE in Makefile if needed)...\n\n"; sleep $(BROWSEDELAY); $(BROWSE) $(LOCALSITEURL)) &
-	@$(WATCHEXEC) -e md,m4 -r './Shake webmanuals && ./Shake orgfiles && make -sC site serve'
+	@$(WATCHEXEC) --print-events -e md,m4 -i hledger.md -i hledger-ui.md -i hledger-web.md -r './Shake webmanuals && ./Shake orgfiles && make -sC site serve'
 
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 $(call def-help-subheading,RELEASING:)