typo

Author: dstogov

UPGRADING.INTERNALS

@@ -124,13 +124,13 @@ PHP 7.4 INTERNALS UPGRADE NOTES
 
   h. Opcache may make classes and op_arrays immutable. Such classes are marked
      by ZEND_ACC_IMMUTABLE flag, they are not going to be copied from opcache
-     shard memory to process memory and must not be modified at all.
+     shared memory to process memory and must not be modified at all.
      Few related data structures were changed to allow addressing mutable data
      structures from immutable ones. This access is implemented through
      ZEND_MAP_PTR... abstraction macros and, basically, uses additional level of
      indirection. op_array->run_time_cache, op_array->static_variables_ptr,
      class_entry->static_members_table and class_entry->iterator_funcs_ptr now
-     have to be access through ZEND_MAP_PTR... macros.
+     have to be accessed through ZEND_MAP_PTR... macros.
      It's also not allowed to change op_array->reserved[] handles of immutable
      op_arrays. Instead, now you have to reserve op_array handle using
      zend_get_op_array_extension_handle() during MINIT and access its value