DOC-3274: Fixed the docker guides for Hyperlinking, Image Proxy, and Spelling services for the TinyMCE 7 Docs.

[abhinavgandham]

Ticket: DOC-3274

• Hyperlinking Service: Staging branch

• Image Proxy Service: Staging branch

• Spelling Service: Staging branch

Changes:

• Fixed curl commands to use a single slash instead of double slash and modified docker compose yaml files to use latest target path in the Hyperlinking, Image Proxy, and Spelling docker guides. Also added a note underneath the docker compose yaml code.

Pre-checks:

• Branch prefixed with feature/<version>/, hotfix/<version>/, staging/<version>/, or release/<version>/.

Review:

• Documentation Team Lead has reviewed

[frossi933]

The lines at docker-compose.yaml files are not aligned correctly, for example: https://github.com/tinymce/tinymce-docs/pull/3859/files#diff-234044e9e949987ad72a2ccde75c2bcc202458cbf7bb216859827077532aab47L129

• Correct yaml alignments

[frossi933]

Starting from the recently released version of Image Proxy service (2.111.12), the target here should point to /app/application.conf as the rest of the services

• Update target for Image Proxy docs
• Add Note specifying the starting version for this breaking change
• Update docker compose up logs for Image Proxy Service

[frossi933]

LGTM