Fix grammar in MCP package sentence

Author: ImadSaddik

units/en/unit1/mcp-clients.mdx

@@ -304,7 +304,7 @@ The weather in Tokyo is sunny with a temperature of 20 degrees Celsius.
 
 </details>
 
-We can also connect to an MCP packages. Here's an example of connecting to the `pubmedmcp` package.
+We can also connect to an MCP package. Here's an example of connecting to the `pubmedmcp` package.
 
 ```python
 from smolagents import ToolCollection, CodeAgent