fix(anthropic): Use correct instrumentAnthropicAiClient export (#15018)

Noticed this while investigating an issue.

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Author: andreiborza

docs/platforms/javascript/common/configuration/integrations/anthropic.mdx

@@ -55,14 +55,14 @@ Sentry.init({
 </PlatformSection>
 
 <PlatformSection supported={["javascript.cloudflare"]}>
-For Cloudflare Workers, you need to manually instrument the Anthropic client using the `instrumentAnthropicClient` helper:
+For Cloudflare Workers, you need to manually instrument the Anthropic client using the `instrumentAnthropicAiClient` helper:
 
 ```javascript
 import * as Sentry from "@sentry/cloudflare";
 import Anthropic from "@anthropic-ai/sdk";
 
 const anthropic = new Anthropic();
-const client = Sentry.instrumentAnthropicClient(anthropic, {
+const client = Sentry.instrumentAnthropicAiClient(anthropic, {
   recordInputs: true,
   recordOutputs: true,
 });
@@ -86,7 +86,7 @@ import * as Sentry from "@sentry/nextjs";
 import Anthropic from "@anthropic-ai/sdk";
 
 const anthropic = new Anthropic();
-const client = Sentry.instrumentAnthropicClient(anthropic, {
+const client = Sentry.instrumentAnthropicAiClient(anthropic, {
   recordInputs: true,
   recordOutputs: true,
 });