[PATCH] Fixup Documentation Makefile for cg-%.txt

The syntax for .PRECIOUS in a makefile requires
an implicit target to match exactly:
	%.txt does not cover all *.txt

Signed-off-by: Kris Shannon <redacted>
---

Documentation/Makefile |    2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/Documentation/Makefile b/Documentation/Makefile
--- a/Documentation/Makefile
+++ b/Documentation/Makefile

@@ -52,7 +52,7 @@
 clean:
 	rm -f *.xml *.html *.1 *.7 cg-*.txt cogito.txt
 
-.PRECIOUS: %.txt
+.PRECIOUS: cg-%.txt
 
 introduction.html: ../README
 	asciidoc -b xhtml11 -d article -f asciidoc.conf -o $@ $<