Update docs

Author: petk

docs/cmake-modules/PHP/ConfigureFile.md

@@ -14,16 +14,13 @@ The following function is exposed:
 ```cmake
 php_configure_file(
   <template-file>
-  <file-output>
-  [INSTALL_DESTINATION <path>]
+  <output-file>
   [VARIABLES [<variable> <value>] ...]
 )
 ```
 
-* `INSTALL_DESTINATION`
-  Path to the directory where the generated file `<file-output>` will be
-  installed to. If not provided, `<file-output>` will not be installed.
 * `VARIABLES`
+
   Pairs of variable names and values.
 
   The `$<INSTALL_PREFIX>` generator expression can be used in variable values,