use separate paragraphs inside list items

doc/manual/src/command-ref/nix-channel.md

@@ -27,7 +27,8 @@ The moving parts of channels are:
 
 This command has the following operations:
 
-  - `--add` *url* \[*name*\]\
+  - `--add` *url* \[*name*\]
+
     Add a channel *name* located at *url* to the list of subscribed channels.
     If *name* is omitted, default to the last component of *url*, with the suffixes `-stable` or `-unstable` removed.
 
@@ -39,17 +40,21 @@ This command has the following operations:
     A channel URL must point to a directory containing a file `nixexprs.tar.gz`.
     At the top level, that tarball must contain a single directory with a `default.nix` file that serves as the channel’s entry point.
 
-  - `--remove` *name*\
+  - `--remove` *name*
+
     Remove the channel *name* from the list of subscribed channels.
 
-  - `--list`\
+  - `--list`
+
     Print the names and URLs of all subscribed channels on standard output.
 
-  - `--update` \[*names*…\]\
+  - `--update` \[*names*…\]
+
     Download the Nix expressions of subscribed channels and create a new generation.
     Update all channels if none is specified, and only those included in *names* otherwise.
 
-  - `--list-generations`\
+  - `--list-generations`
+
     Prints a list of all the current existing generations for the
     channel profile.
 
@@ -58,7 +63,8 @@ This command has the following operations:
     nix-env --profile /nix/var/nix/profiles/per-user/$USER/channels --list-generations
     ```
 
-  - `--rollback` \[*generation*\]\
+  - `--rollback` \[*generation*\]
+
     Revert channels to the state before the last call to `nix-channel --update`.
     Optionally, you can specify a specific channel *generation* number to restore.