use bullet points for structure

add newline before sublist start
add newline before sublist start
Apply suggestions from code review.

Converted from getsops/sops@b799dd1
and getsops/sops@ea21150
and getsops/sops@19341b8
and getsops/sops@285d117

Co-authored-by: Martin Dürrmeier <857448+md42@users.noreply.github.com>
Signed-off-by: Martin Dürrmeier <857448+md42@users.noreply.github.com>
Signed-off-by: Felix Fontein <felix@fontein.de>

Author: felixfontein

content/en/docs/_index.md

@@ -230,15 +230,25 @@ $ sops encrypt --age age1yt3tfqlfrwdwx0z0ynwplcr6qxcxfaqycuprpmy89nr83ltx74tqdps
 
 When decrypting a file with the corresponding identity, SOPS will look
 for a text file name `keys.txt` located in a `sops` subdirectory of your
-user configuration directory. On Linux, this would be
-`$XDG_CONFIG_HOME/sops/age/keys.txt`. On macOS, this would be
-`$HOME/Library/Application Support/sops/age/keys.txt`. On Windows, this
-would be `%AppData%\sops\age\keys.txt`. You can specify the location of
-this file manually by setting the environment variable
-**SOPS_AGE_KEY_FILE**. Alternatively, you can provide the key(s)
-directly by setting the **SOPS_AGE_KEY** environment variable.
-Alternatively, you can provide a command to output the age keys
-by setting the **SOPS_AGE_KEY_CMD** environment variable.
+user configuration directory.
+
+* **Linux**
+
+  - Looks for `keys.txt` in `$XDG_CONFIG_HOME/sops/age/keys.txt`;
+  - Falls back to `$HOME/.config/sops/age/keys.txt` if `$XDG_CONFIG_HOME` isn't set.
+
+* **macOS**
+
+  - Looks for `keys.txt` in `$HOME/Library/Application Support/sops/age/keys.txt`.
+
+* **Windows**
+  - Looks for `keys.txt` in `%AppData%\sops\age\keys.txt`.
+
+You can override the default lookup by:
+
+* setting the environment variable **SOPS_AGE_KEY_FILE**;
+* setting the **SOPS_AGE_KEY** environment variable;
+* providing a command to output the age keys by setting the **SOPS_AGE_KEY_CMD** environment variable.
 
 The contents of this key file should be a list of age X25519 identities,
 one per line. Lines beginning with `#` are considered comments and