Reformat the README, and put the Reddit rule back together

A Markdown formatter over the file, plus a repair to what it did on the way
through.

The Reddit rewrite rule is the longest row in the table and the only one the
formatter took apart. The pipes in its alternation are written `\|`, which is
how a literal pipe goes inside a table cell and how the X and TikTok rows have
always written theirs; the formatter dropped the backslashes, at which point
four of them became column separators. The row became seven cells, the
separator row was widened to seven to match, and `(.*)` picked up an escape
and turned into `(.\*)`.

The visible damage is a mangled table. The real damage is that the rule is
there to be copied into StopTheMadness, and what was left could not be: split
across six cells with a regex that no longer matches a Reddit URL.

The row and the separator are restored. Every rule in the table now compiles
and rewrites correctly, checked by pulling them out of the file and running
them against real URLs for each platform, including the `redd.it` short code
and a `/s/` share link.

Worth knowing that the formatter will do this again. Nothing in the repository
configures one, so this was run by hand -- but if it becomes a habit, README.md
wants excluding, because this table cannot survive it.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017nMQ2eDKnqALYhAibpTKTu

README.md

@@ -60,7 +60,7 @@ Each adapter layers its extraction, most structured first:
 4. **Open Graph tags** — the floor, and enough to show something.
 
 | Platform  | Loads                        | Reads                                                           |
-| --------- | ---------------------------- | -------------------------------------------------------- |
+| --------- | ---------------------------- | --------------------------------------------------------------- |
 | Bluesky   | the public AT Protocol API   | `getPostThread`; falls back to the post page                    |
 | X         | `platform.twitter.com` embed | the `cdn.syndication.twimg.com/tweet-result` response           |
 | Instagram | `/embed/captioned/`          | `shortcode_media`, then the rendered `<video>`/`<img>`          |
@@ -93,7 +93,7 @@ Reddit posts come with it: every comment the first page carried, nested the way
 written. Each comment is a `<details>` element, so folding one takes its whole subtree
 with it, works without JavaScript and works from the keyboard; a collapsed comment says
 how many replies it is hiding. "Collapse all" is the one piece that needs the script,
-which is why it only appears once the script has run. What was behind a *load more* is
+which is why it only appears once the script has run. What was behind a _load more_ is
 not fetched — that is a second page and often a third — but it is counted and said out
 loud rather than quietly dropped.