four spaces required for nested list

Author: jbclements

blog/_src/posts/2025-01-31-racket-v8-16.md

@@ -13,19 +13,19 @@ We are pleased to announce Racket v8.16 is now available from [https://download.
 ## As of this release:
 
 - Racket has expanded support for immutable and mutable treelists:
-  - A variety of new treelist utility functions are available: [`treelist-filter`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-filter%29%29), [`treelist-flatten`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-flatten%29%29), et cetera.
-  - The [`mutable-treelist-prepend!`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Fmutable-treelist..rkt%29._mutable-treelist-prepend%21%29%29) function allows prepending to mutable treelists.
-  - [Mutable treelists](https://docs.racket-lang.org/reference/treelist.html#%28part._.Mutable_.Treelists%29) are [serializable](https://docs.racket-lang.org/reference/serialization.html).
+    - A variety of new treelist utility functions are available: [`treelist-filter`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-filter%29%29), [`treelist-flatten`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-flatten%29%29), et cetera.
+    - The [`mutable-treelist-prepend!`](https://docs.racket-lang.org/reference/treelist.html#%28def._%28%28lib._racket%2Fmutable-treelist..rkt%29._mutable-treelist-prepend%21%29%29) function allows prepending to mutable treelists.
+    - [Mutable treelists](https://docs.racket-lang.org/reference/treelist.html#%28part._.Mutable_.Treelists%29) are [serializable](https://docs.racket-lang.org/reference/serialization.html).
 - The [`serialize-structs`](https://docs.racket-lang.org/reference/serialization.html#%28mod-path._racket%2Fserialize-structs%29) module allows the minimization of dependencies by providing only a handful of core forms.
 - The [`flbit-field`](https://docs.racket-lang.org/reference/flonums.html#%28def._%28%28lib._racket%2Fflonum..rkt%29._flbit-field%29%29) function allows access to the binary representation of IEEE floating-point numbers.
 - The top-left search box in the [documentation](https://docs.racket-lang.org/index.html) works once more.
 - The [XML reader](https://docs.racket-lang.org/xml/index.html#%28part._.Reading_and_.Writing_.X.M.L%29) is 2-3x faster on inputs with long CDATA and comments, and avoids some internal contract checks to obtain a 25% speedup on large documents generally.
 - The [pregexp syntax includes "\X" to match a grapheme cluster](https://docs.racket-lang.org/reference/regexp.html#(part._regexp-syntax)), following Perl and PCRE.
 - The [`read-json*`](https://docs.racket-lang.org/json/index.html#%28def._%28%28submod._%28lib._json%2Fmain..rkt%29._for-extension%29._read-json%2A%29%29) and [`write-json*`](https://docs.racket-lang.org/json/index.html#%28def._%28%28submod._%28lib._json%2Fmain..rkt%29._for-extension%29._write-json%2A%29%29) functions allow customization of   the Racket representation of JSON elements, eliminating the need for a separate "translation" pass.
 - Racket has new port I/O functions:
-  - The [`open-input-nowhere`](https://docs.racket-lang.org/reference/port-lib.html#%28def._%28%28lib._racket%2Fport..rkt%29._open-input-nowhere%29%29) function creates an empty input port.
-  - The [`pipe-port?`](https://docs.racket-lang.org/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._pipe-port~3f%29%29) function makes it possible to determine whether a port is created by [`make-pipe`](https://docs.racket-lang.org/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._make-pipe%29%29).
-  - The [`port-file-stat`](https://docs.racket-lang.org/reference/file-ports.html#%28def._%28%28quote._~23~25kernel%29._port-file-stat%29%29) function allows gathering information about the file that is the source or target of a file-stream port.
+    - The [`open-input-nowhere`](https://docs.racket-lang.org/reference/port-lib.html#%28def._%28%28lib._racket%2Fport..rkt%29._open-input-nowhere%29%29) function creates an empty input port.
+    - The [`pipe-port?`](https://docs.racket-lang.org/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._pipe-port~3f%29%29) function makes it possible to determine whether a port is created by [`make-pipe`](https://docs.racket-lang.org/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._make-pipe%29%29).
+    - The [`port-file-stat`](https://docs.racket-lang.org/reference/file-ports.html#%28def._%28%28quote._~23~25kernel%29._port-file-stat%29%29) function allows gathering information about the file that is the source or target of a file-stream port.
 - A [revised representation](https://racket.discourse.group/t/fixnum-slow-despite-docs/3409/6) of pointers improves the performance of foreign function calls. As a result, [`ptr-ref`](https://docs.racket-lang.org/foreign/foreign_pointer-funcs.html#%28def._%28%28quote._~23~25foreign%29._ptr-ref%29%29) and [`ptr-set!`](https://docs.racket-lang.org/foreign/foreign_pointer-funcs.html#%28def._%28%28quote._~23~25foreign%29._ptr-set%21%29%29) are substantially faster.
 - In anticipation of the fifteenth [RacketCon](https://con.racket-lang.org), the [`fifteenth`](https://pre-release.racket-lang.org/doc/reference/pairs.html#%28def._%28%28lib._racket%2Flist..rkt%29._fifteenth%29%29) function returns the fifteenth element of a list.
 - Racket has an improved multi-line convention for error messages.