Update docs for the basic example

Author: vinser52

scripts/docs_config/examples.rst

@@ -31,19 +31,31 @@ the OS Memory Provider API::
 
     #include "umf/providers/provider_os_memory.h"
 
-Get a pointer to the OS memory provider operations struct and
-a copy of default parameters::
+Get a pointer to the OS memory provider operations struct::
 
     umf_memory_provider_ops_t *provider_ops = umfOsMemoryProviderOps();
-    umf_os_memory_provider_params_t params = umfOsMemoryProviderParamsDefault();
+
+Get a default memory provider parameters. The handle to the parameters object
+is returned by the :any:`umfOsMemoryProviderParamsCreate` function::
+
+    umf_os_memory_provider_params_handle_t params = NULL;
+
+    res = umfOsMemoryProviderParamsCreate(&params);
+    if (res != UMF_RESULT_SUCCESS) {
+        printf("Failed to create OS memory provider params!\n");
+        return -1;
+    }
 
 The handle to created memory ``provider`` object is returned as the last argument
 of :any:`umfMemoryProviderCreate`::
 
     umf_memory_provider_handle_t provider;
     umfMemoryProviderCreate(provider_ops, &params, &provider);
 
-With this handle we can allocate a chunk of memory, call :any:`umfMemoryProviderAlloc`::
+The ``params`` object can be destroyed after the provider is created::
+    umfOsMemoryProviderParamsDestroy(params);
+
+With the ``provider`` handle we can allocate a chunk of memory, call :any:`umfMemoryProviderAlloc`::
 
     size_t alloc_size = 5000;
     size_t alignment = 0;