Update 'raspi.md'

2017-11-28 22:23:02 -07:00 · 2017-11-28 22:23:02 -07:00 · f1dd9dd042
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+Shared hosting: https://doc.wallabag.org/en/admin/installation/installation.html#installation
+
 Raspberry Pi using letsencrypt:

 `gpg --recv-key 7638D0442B90D010`