Remove a -C I forgot to remove earlier.

llvm-svn: 20321
diff --git a/llvm/docs/CommandGuide/Makefile b/llvm/docs/CommandGuide/Makefile
index 411bbfe..54f4cef 100644
--- a/llvm/docs/CommandGuide/Makefile
+++ b/llvm/docs/CommandGuide/Makefile
@@ -82,7 +82,7 @@
 	$(Verb) $(MKDIR) $(HTML_DIR)
 	$(Verb) $(DataInstall) $(HTML) $(HTML_DIR)
 	$(Verb) $(DataInstall) $(PROJ_SRC_DIR)/index.html $(HTML_DIR)
-	$(Verb) $(DataInstall) -C $(PROJ_SRC_DIR)/manpage.css $(HTML_DIR)
+	$(Verb) $(DataInstall) $(PROJ_SRC_DIR)/manpage.css $(HTML_DIR)
 	$(Echo) Installing MAN CommandGuide Documentation
 	$(Verb) $(MKDIR) $(MAN_DIR)
 	$(Verb) $(DataInstall) $(MAN) $(MAN_DIR)