fix typo METHOD_COMPLETION_COMPLETE

Signed-off-by: jitokim <pigberger70@gmail.com>

Author: jitokim

mcp/src/main/java/io/modelcontextprotocol/spec/McpSchema.java

@@ -79,7 +79,7 @@ private McpSchema() {
 
 	public static final String METHOD_NOTIFICATION_PROMPTS_LIST_CHANGED = "notifications/prompts/list_changed";
 
-	public static final String METHOD_COMPLETION_COMPLETE = "completions/complete";
+	public static final String METHOD_COMPLETION_COMPLETE = "completion/complete";
 
 	// Logging Methods
 	public static final String METHOD_LOGGING_SET_LEVEL = "logging/setLevel";