fix: Normalize last empty line of the generated output (#336)

Generated output will not have any empty line or
carriage return at the end of the last line and
one carriage return (\n) will be added when we
print that to stdout.

Signed-off-by: Khosrow Moossavi <khos2ow@gmail.com>

scripts/docs/generate.go

@@ -179,7 +179,7 @@ func printExample(buf *bytes.Buffer, name string) error {
 			buf.WriteString(fmt.Sprintf("    %s\n", s))
 		}
 	}
-	buf.WriteString("\n\n")
+	buf.WriteString("\n")
 	return nil
 }