Fix typos in assert notNull

Author: dafriz

models/spring-ai-bedrock/src/main/java/org/springframework/ai/bedrock/BedrockUsage.java

@@ -34,7 +34,7 @@ public static BedrockUsage from(AmazonBedrockInvocationMetrics usage) {
 	private final AmazonBedrockInvocationMetrics usage;
 
 	protected BedrockUsage(AmazonBedrockInvocationMetrics usage) {
-		Assert.notNull(usage, "OpenAI Usage must not be null");
+		Assert.notNull(usage, "Bedrock Usage must not be null");
 		this.usage = usage;
 	}
 

models/spring-ai-moonshot/src/main/java/org/springframework/ai/moonshot/metadata/MoonshotUsage.java

@@ -16,7 +16,7 @@ public static MoonshotUsage from(MoonshotApi.Usage usage) {
 	}
 
 	protected MoonshotUsage(MoonshotApi.Usage usage) {
-		Assert.notNull(usage, "OpenAI Usage must not be null");
+		Assert.notNull(usage, "Moonshot Usage must not be null");
 		this.usage = usage;
 	}