Update tool_config.json

tool_config.json

@@ -1,5 +1,5 @@
 {
-  "description": "This is a tool that counts the words of an input. It takes an input.",
-  "name": "word_counter",
-  "tool_class": "word_counter.WordCounterTool"
+  "description": "This is a tool that counts the sentences of an input. It takes an input.",
+  "name": "sentence_counter",
+  "tool_class": "sentence_counter.SentenceCounterTool"
 }