docs: Update the java Quickstart and images

[pratik-mahalle]

What has changed?

Please include a summary of the change.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• Documentation update (if none of the other choices apply).

How Has This Been Tested?

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Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.

[Copilot]

Pull Request Overview

Updates the Java quickstart documentation and images to improve clarity and accuracy of the documentation.

• Updates image references to use more descriptive filenames
• Fixes documentation headers and text formatting
• Streamlines command instructions by combining git clone and cd operations

Reviewed Changes

Copilot reviewed 7 out of 22 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
versioned_docs/version-3.0.0/server/installation_tabs.md	Updates Docker installation header for clarity on WSL
versioned_docs/version-3.0.0/quickstart/samples-java.md	Updates image references to use more descriptive filenames
versioned_docs/version-3.0.0/quickstart/java-spring-postgres.md	Updates image references for PostgreSQL quickstart
versioned_docs/version-3.0.0/quickstart/java-spring-boot-xml.md	Replaces GitHub asset images with local documentation images
versioned_docs/version-3.0.0/quickstart/java-spring-boot-openhospital.md	Adds cd commands and updates image references
versioned_docs/version-3.0.0/keploy-explained/testing-guide.md	Fixes header formatting
versioned_docs/version-2.0.0/quickstart/java-spring-boot-openhospital.md	Combines git clone and cd commands

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[Copilot]

The git clone and cd commands should be combined into a single line for consistency with the pattern used in version 2.0.0, as git clone https://github.com/keploy/openhospital-core && cd openhospital-core/.

Suggested change

	git clone https://github.com/keploy/openhospital-core
	cd openhospital-core/
	git clone https://github.com/keploy/openhospital-core && cd openhospital-core/

[Copilot]

The git clone and cd commands should be combined into a single line for consistency, as git clone https://github.com/keploy/openhospital-api && cd openhospital-api/.

Suggested change

	git clone https://github.com/keploy/openhospital-api
	cd openhospital-api/
	git clone https://github.com/keploy/openhospital-api && cd openhospital-api/

[Copilot]

The git clone and cd commands should be combined into a single line for consistency, as git clone https://github.com/keploy/openhospital-ui && cd openhospital-ui/.

Suggested change

	git clone https://github.com/keploy/openhospital-ui
	cd openhospital-ui/
	git clone https://github.com/keploy/openhospital-ui && cd openhospital-ui/