Move premable comments from roff to C

src/main.c

@@ -599,14 +599,14 @@ static void parse_document(struct parser *p) {
 
 static void output_scdoc_preamble(struct parser *p) {
 	fprintf(p->output, ".\\\" Generated by scdoc " VERSION "\n");
-	fprintf(p->output, ".\\\" Fix weird quotation marks:\n");
-	fprintf(p->output, ".\\\" http://bugs.debian.org/507673\n");
-	fprintf(p->output, ".\\\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html\n");
+	// Fix weird quotation marks
+	// http://bugs.debian.org/507673
+	// http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
 	fprintf(p->output, ".ie \\n(.g .ds Aq \\(aq\n");
 	fprintf(p->output, ".el       .ds Aq '\n");
-	fprintf(p->output, ".\\\" Disable hyphenation:\n");
+	// Disable hyphenation:
 	roff_macro(p, "nh", NULL);
-	fprintf(p->output, ".\\\" Disable justification:\n");
+	// Disable justification:
 	roff_macro(p, "ad l", NULL);
 	fprintf(p->output, ".\\\" Generated content:\n");
 }