Fix typo in getting-started.mdx: `cd agent-sdk` should be `cd software-agent-sdk`

[neubig]

Description

In the SDK getting-started guide, the "Install from Source" instructions have a mismatch between the git clone command and the cd command.

Location: sdk/getting-started.mdx line 85

Current:

git clone https://github.com/OpenHands/software-agent-sdk.git
cd agent-sdk

Should be:

git clone https://github.com/OpenHands/software-agent-sdk.git
cd software-agent-sdk

The directory name after cloning should match the repository name software-agent-sdk, not agent-sdk.

Fix

Change line 85 from cd agent-sdk to cd software-agent-sdk.