fix: update instructions for customizing values-global.yaml

[gaurav-nelson]

This pull request introduces a new comprehensive reference page for the values-global.yaml configuration file and updates documentation throughout the repository to point users to this new resource. The changes improve user guidance by providing clear explanations for each field in values-global.yaml and standardizing instructions for customizing deployments across multiple patterns.

Fixes #340

Documentation improvements:

• Added a new page, values-global-configuration.adoc, that provides a detailed reference for each field in values-global.yaml, including descriptions, defaults, and usage examples.
• Updated numerous getting started and workflow guides across patterns to reference the new global configuration documentation, making it easier for users to understand and customize their deployments. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17]

Standardization and clarity:

• Standardized instructions for customizing values-global.yaml across documentation, including consistent commit message recommendations and clear steps for making and pushing changes. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17]

Cross-linking and discoverability:

• Added cross-links to the new global configuration reference from values file outlines and pattern documentation, improving discoverability and user navigation. [1] [2]

These changes collectively provide a clearer, more maintainable, and user-friendly experience for configuring validated patterns.

[ocpdocs-previewbot]

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