update docs

ChangeLog.md

@@ -18,6 +18,8 @@ fixes, check out the
  - Deadlock potential in `stumpless_set_entry_hostname` and
    `stumpless_set_entry_procid` when validation fails.
  - Builds in ANSI C environments.
+ - `sys/socket.h`-based TCP network targets will fail to send if the remote
+   end sends a FIN message without waiting for `send` to fail.
 
 
 ## [2.1.0] - 2022-11-13

docs/roadmap.md

@@ -10,12 +10,6 @@ or want to make a suggestion, please submit an issue on the project's
    as to a local file as well as a network server. Target chains will allow this
    stream to be defined as a logging target, and a logging call only made to
    this instead of manually logging to each target.
- * [ADD] **Improved network target error detection**
-   Network targets do not currently detect errors that they would be able to in
-   some cases, such as with `select` or `poll`. This may lead to a connection
-   being left open for longer than necessary if the error is already detected.
-   This change will improve error detection in network targets to reduce the
-   time needed to pass these errors on to callers.
 
 
 ## 3.0.0 (next major release)