README.md: Add python3-textile install suggestion

Depending on your system, "pip install textile" may not work:

    Traceback (most recent call last):
      File "./scripts/myhtml.py", line 8, in <module>
	import textile
    ModuleNotFoundError: No module named 'textile'

You may have to install the distro's "python3-textile" package instead.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/README.md b/README.md
index 68086f4..6807791 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,7 @@ You can add it by
 ## How to create Wiki ?
 It is easy ! just "wiki"
 
-You need to install "textile" first
+You need to install "textile" first, by using one of:
 
 	> pip install textile
+	> sudo apt install python3-textile