README tweaks.

README.md

@@ -785,38 +785,54 @@ WITH_FREETYPE=1
 
 The following options may appear in `.php-wasm-rc`.
 
+---
+
 ##### PHP_VERSION
 
 8.0|8.1|8.2|**8.3**
 
+---
+
 ##### PHP_DIST_DIR
 
 This is the directory where javascript & wasm files will be built to, *relative to the current directory.*
 
+---
+
 ##### PHP_ASSET_PATH
 
 This is the directory where shared libs, extension, `.data` files & other supporting files will be built to, *relative to the current directory.* Defaults to `PHP_DIST_DIR`.
 
+---
+
 ##### OPTIMIZE
 
 0|1|2|**3**
 
 The optimization level to use while compiling.
 
+---
+
 ##### SUBOPTIMIZE
 
 The optimization level to use while compiling libraries. Defaults to `OPTIMIZE`.
 
+---
+
 ##### PRELOAD_ASSETS
 
 A list of **absolute paths** to files & directories to build to the `/preload` directory. Will produce a `.data` file.
 
+---
+
 ##### ASSERTIONS
 
 0|**1**
 
 Build with/without assertions.
 
+---
+
 #### Extensions
 
 As stated above, extensions may be compiled as `dynamic`, `shared`, or `static`.