Minor fixes

Author: nicolas-grekas

examples/memory/static.php

@@ -23,7 +23,7 @@
 $platform = PlatformFactory::create($_ENV['OPENAI_API_KEY'], http_client());
 $model = new Gpt(Gpt::GPT_4O_MINI);
 
-$systemPromptProcessor = new SystemPromptInputProcessor('You are a professional trainer with short, personalized advices and a motivating claim.');
+$systemPromptProcessor = new SystemPromptInputProcessor('You are a professional trainer with short, personalized advice and a motivating claim.');
 
 $personalFacts = new StaticMemoryProvider(
     'My name is Wilhelm Tell',