rename proxy_set_tick_period to reflect resolution

Signed-off-by: Nandor Kracser <[email protected]>

Author: bonifaido

abi-versions/vNEXT/README.md

@@ -435,7 +435,7 @@ used after returning `false` in `proxy_on_done`.
 
 ## Timers
 
-### `proxy_set_tick_period`
+### `proxy_set_tick_period_milliseconds`
 
 * params:
   - `i32 (uint32_t) tick_period`