doc install ubuntu: update support version

komainu8 · komainu8 · commit d9b28ee6c322 · 2021-11-29T11:47:49.000+09:00
diff --git a/doc/locale/ja/LC_MESSAGES/install.po b/doc/locale/ja/LC_MESSAGES/install.po
@@ -787,6 +787,9 @@ msgstr ""
 msgid "21.04 Hirsute Hippo"
 msgstr ""
 
+msgid "21.10 Impish Indri"
+msgstr ""
+
 msgid "Enable the universe repository to install Groonga::"
 msgstr ""
 "Groongaをインストールするためにuniverseリポジトリを有効にしてください::"
diff --git a/doc/source/install/ubuntu.rst b/doc/source/install/ubuntu.rst
@@ -23,6 +23,7 @@ Here are supported Ubuntu versions:
   * 18.04 LTS Bionic Beaver
   * 20.04 Focal Fossa
   * 21.04 Hirsute Hippo
+  * 21.10 Impish Indri
 
 Enable the universe repository to install Groonga::
 
