docs: improve some phrasing

README.md

@@ -62,11 +62,12 @@ interface and contemporary regex syntax.
 **Requirements**
 - [ripgrep](https://github.com/BurntSushi/ripgrep) with `pcre2` support
 	+ `brew install ripgrep` (already includes `pcre2` by default)
-	+ `cargo install ripgrep --features "pcre2"`
-	+ You can also use this plugin without `pcre2` by setting
-	  `regexOptions.pcre2 = false` in the config
+	+ `cargo install ripgrep --features pcre2`
+- Alternatively, you can also use this plugin without `pcre2` by setting
+  `regexOptions.pcre2 = false` in the config. However, you will then miss
+  some features like lookaheads.
 - nvim >= 0.10
-- `:TSInstall regex` (only needed for syntax highlighting)
+- optional: `:TSInstall regex` (adds syntax highlighting)
 
 ```lua
 -- lazy.nvim