Fix docs for new editor replacements

See #3100

doc/help/settings.asciidoc

@@ -1961,9 +1961,7 @@ Default: +pass:[-1]+
 [[editor.command]]
 === editor.command
 The editor (and arguments) to use for the `open-editor` command.
-Several placeholders are supported. Placeholders are substituted by the
+Several placeholders are supported. Placeholders are substituted by the respective value when executing the command.
-respective value when executing the command.
-
 `{file}` gets replaced by the filename of the file to be edited.
 `{line}` gets replaced by the line in which the caret is found in the text.
 `{column}` gets replaced by the column in which the caret is found in the text.
@@ -1976,7 +1974,9 @@ Default:
 
 - +pass:[gvim]+
 - +pass:[-f]+
-- +pass:[{}]+
+- +pass:[{file}]+
+- +pass:[-c]+
+- +pass:[normal {line}G{column0}l]+
 
 [[editor.encoding]]
 === editor.encoding

qutebrowser/config/configdata.yml

@@ -770,8 +770,20 @@ editor.command:
   desc: >-
     The editor (and arguments) to use for the `open-editor` command.
 
+    Several placeholders are supported. Placeholders are substituted by the
+    respective value when executing the command.
+
     `{file}` gets replaced by the filename of the file to be edited.
 
+    `{line}` gets replaced by the line in which the caret is found in the text.
+
+    `{column}` gets replaced by the column in which the caret is found in the text.
+
+    `{line0}` same as `{line}`, but starting from index 0.
+
+    `{column0}` same as `{column}`, but starting from index 0.
+
+
 editor.encoding:
   type: Encoding
   default: utf-8