APIM-7405: fix display grammar and assignment issues

[mukul-tyagi08]

Issue

https://gravitee.atlassian.net/browse/APIM-7405

Description

Fix minor display, grammar, and assignment issues in HTML and TypeScript files

1. Settings > Portal > Client Registration > Configuration - URL example is missing (At the bottom)

Before:

After:

2. Grammar on API Resources UI page: "Resources are link to the API lifecycle." needs to be changed to "Resources are linked to the API lifecycle."

Before:

After:

3. API Traffic > Settings UI. EL example is malformed (at the bottom): Remove one equal to sign

Before:

After:

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