Add mobile-friendly meta tag
Add mobile-friendly meta tag

iktakahiro/sphinxjp.themes.pd,iktakahiro/sphinxjp.themes.pd,iktakahiro/sphinxjp.themes.pd,iktakahiro/sphinx_theme_pd,iktakahiro/sphinx_theme_pd,iktakahiro/sphinx_theme_pd,iktakahiro/sphinx_theme_pd