[1.1.0] Fix formatting issues and typos

[sgayangi]

Purpose

This PR fixes the issues pointed out in the following PRs:

• https://github.com/wso2/docs-apk/pull/330
• https://github.com/wso2/docs-apk/pull/340
• https://github.com/wso2/docs-apk/pull/342
• https://github.com/wso2/docs-apk/pull/359
• https://github.com/wso2/docs-apk/pull/362
• https://github.com/wso2/docs-apk/pull/366
• https://github.com/wso2/docs-apk/pull/412
• https://github.com/wso2/docs-apk/pull/475
• https://github.com/wso2/docs-apk/pull/497
• https://github.com/wso2/docs-apk/pull/523
• https://github.com/wso2/docs-apk/pull/554
• https://github.com/wso2/docs-apk/pull/558