Update prose like PDO_IBM for Windows builds

Author: NattyNarwhal

README.md

@@ -60,22 +60,20 @@ In case of Docker(Example Amazon Linux2):
    the HTTP server environment, add the LD_LIBRARY_PATH variable in the httpd.conf file.
 
 ```
-## How to install php ibm_db2 extension in Windows
-```
-Set CLIDRIVER\bin path to PATH environment variable.
-
-set PATH=<CLIDRIVER installed path>\bin;%PATH%
-
-1.  Download the php_ibm_db2 DLLs for PHP 7.x(7.0, 7.1, 7.2 and 7.3) from below link.
-      https://github.com/ibmdb/php_ibm_db2
-	  
-    For PHP 5.x, Download the DLL from Pecl. Pasted the link below.
-      https://pecl.php.net/package/ibm_db2
-   
-2. Open the php.ini file in an editor of your choice. Edit the extension entry in the
-   php.ini file in the <local_php_directory>\php\lib directory to reference the PHP driver:
-	  extension=php_ibm_db2
-```
+## Prebuilt binaries for Windows
+
+1. Add the `CLIDRIVER\bin` path to the `PATH` environment variable like so (for a batch file):
+    ```
+    set PATH=<CLIDRIVER installed path>\bin;%PATH%
+    ```
+2. Download the DLLs for PHP 7.x and 8.x from [the ibmdb repository](https://github.com/ibmdb/php_ibm_db2).
+   Select the build for the PHP that matches the version, architecture, and thread model.
+
+3. Open the `php.ini` file in an editor of your choice. Edit the extension entry in the
+   `php.ini` file in the `<local_php_directory>\php\lib` directory to reference the driver:
+    ````
+    extension=php_ibm_db2
+    ````
 
 ## How to run sample program