chore: comment in English

Author: ryoppippi

proxy.ts

@@ -143,7 +143,7 @@ class ProxyApp {
     const origin = new URL(this.ollamaEndpoint).origin;
     const url = convertToCustomEndpoint(c.req.url, parseURL(endpoint));
     const reqHeaders = this.setCORSHeaders(c.req.raw, origin);
-    // 设置Origin头, 否则ollama会报错
+    // Set the Origin header, otherwise ollama will report an error.
     reqHeaders.set("Origin", origin);
     const req = new Request(url, {
       ...c.req.raw,