Add an apostrophe

include/clap/host.h

@@ -35,7 +35,7 @@ typedef struct clap_host {
    void(CLAP_ABI *request_process)(const struct clap_host *host);
 
    // Request the host to schedule a call to plugin->on_main_thread(plugin) on the main thread.
-   // This callback should be called as soon as practicable, usually in the host applications next
+   // This callback should be called as soon as practicable, usually in the host application's next
    // available main thread time slice. Typically callbacks occur at least in the 10s-to-50s-of-milliseconds
    // or 30-120hz timeslice range. Plugins should not make assumptions about the exactness of timing for
    // a main thread callback but hosts should endeavour to be prompt.