add 'woke-install', remove woke with 'clean'

Makefile

@@ -42,7 +42,14 @@ $(VENVDIR): $(SPHINXDIR)/requirements.txt
 	@touch $(VENVDIR)
 
 
-install: $(VENVDIR)
+woke-install:
+	@type woke >/dev/null 2>&1 || \
+		{ echo "Installing \"woke\" needs sudo \n"; sudo snap install woke; }
+
+.PHONY:  woke-install
+
+
+install: $(VENVDIR) woke-install
 
 .PHONY:  install
 
@@ -74,6 +81,7 @@ serve: html
 clean: clean-doc
 	@test ! -e "$(VENVDIR)" -o -d "$(VENVDIR)" -a "$(abspath $(VENVDIR))" != "$(VENVDIR)"
 	rm -rf $(VENVDIR)
+	@{ echo "Removing \"woke\" needs sudo \n"; sudo snap remove woke; }
 
 .PHONY: clean
 
@@ -96,8 +104,7 @@ linkcheck: install
 .PHONY: linkcheck
 
 
-woke:
-	type woke >/dev/null 2>&1 || { sudo snap install woke; }
+woke: woke-install
 	woke *.rst **/*.rst -c https://github.com/canonical/Inclusive-naming/raw/main/config.yml
 
 .PHONY: woke