disable php module purge code example

Example 1: php enable extension ubuntu

### Syntax
phpenmod MODULE_NAME

### Enable mbstring php module
phpenmod mbstring

Example 2: php enablem mod

### Syntax
phpenmod -v <PHP VERSION> <MODULE NAME>

### Enable module for specific php version
phpenmod -v 5.6 mbstring
phpenmod -v 7.4 mbstring