update documentation (doc/counter_ex.h)

doc/counter_ex.h

@@ -7,12 +7,20 @@ unsigned int get_acc(uint64_t *results, void *);
 void clean_acc(void *);
 void label_acc(char **labels, void *);
 
-struct optparse_long counters_opt = {"accumulator", 'a', OPTPARSE_NONE};
-struct captor counters = {
-    .usage_arg = NULL,
-    .usage_msg = "dumb accumulator\n"
+Captor rapl = {
     .init = init_acc,
     .get = get_acc,
     .clean = clean_acc,
     .label = label_acc,
+    .nb_opt = 1,
+};
+
+Optparse rapl_opt[1] = {
+    {
+        .longname = "accumulator",
+        .shortname = 'a',
+        .argtype = OPTPARSE_NONE,		/* OPTPARSE_NONE / OPTPARSE_OPTIONAL / OPTPARSE_REQUIRED */
+        .usage_arg = NULL,
+        .usage_msg = "dumb accumulator",
+    },
 };