Fix image size and mismatch parens

Author: sorawee

blog/_src/posts/2024-10-31-racket-v8-15.md

@@ -14,18 +14,17 @@ We are pleased to announce Racket v8.15 is now available from [https://download.
 
 - Documentation search results are ordered, with visual cues
   indicating what their source is (core, main-distribution, etc.).
-  These results are also grouped by language family (Racket, Rhombus,
-  etc.). (e.g. [search `second`](https://docs.racket-lang.org/search/index.html?q=second))
-  .)
+  These results are also grouped by language family (Racket, Rhombus, etc.).
+  Search e.g. [`second`](https://docs.racket-lang.org/search/index.html?q=second) to see an example.
 
 - DrRacket offers to restore previously open files when starting,
   which can be made the default.
 
-  ![DrRacket restore open files dialog](/img/8-15-restore.jpg)
+  <img src="/img/8-15-restore.jpg" alt="DrRacket restore open files dialog" width="600" />
 
 - In DrRacket, Images in editing panels can be saved by right-clicking, including those generated by the functional picture libraries [`pict`](https://docs.racket-lang.org/pict/index.html) and [`2htdp/image`](https://docs.racket-lang.org/teachpack/2htdpimage.html).
 
-  ![DrRacket save image in context menu](/img/8-15-save2htdpImage.jpg)
+  <img src="/img/8-15-save2htdpImage.jpg" alt="DrRacket save image in context menu" width="600" />
 
 - `raco pkg` introduces the `uninstall` command as the opposite of `install`. The `remove` name for this functionality is retained for compatibility. (See [Package Management in Racket - 3.3 `raco pkg uninstall`](https://docs.racket-lang.org/pkg/cmdline.html#%28part._raco-pkg-uninstall%29).)