Fix typos

Author: petk

cmake/cmake/modules/PHP/AddCustomCommand.cmake

@@ -37,7 +37,7 @@ their timestamps manually and executes the PHP_COMMAND only when needed.
 ```cmake
 php_add_custom_command(
   php_generate_something
-  OUTPUTS
+  OUTPUT
     list of generated files
   DEPENDS
     list of files or targets that this generation depends on

cmake/cmake/modules/PHP/AddCustomCommand/RunCommand.cmake

@@ -1,6 +1,6 @@
 #[=============================================================================[
 Script for PHP/AddCustomCommand module that loops over output files and their
-dependant input source files and runs the command inside the execute_process().
+dependent input source files and runs the command inside the execute_process().
 
 Expected variables: