Organize documents and fix links.

image/compare.md

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+# Table of Contents
+
+- [Command Description](#command-description)
+- [Command usage](#command-usage)
+- [Example](#example)
+- [Operating system support](#operating-system-support)
+
+## Command Description
+
+This operation will compare two media dumps and print all differences between them. Dumps can be in different formats.
+
+## Command usage
+
+```bash
+Aaru -d [true/false] -v [true/false] image compare -h [true/false] <image-path1> <image-path2>
+```
+
+`-d, --debug [true/false]` shows debug output *(default false)*  
+`-v, --verbose [true/false]` shows verbose output *(default false)*  
+`-h, --help [true/false]` shows help screen for the command instead of running it, ignores all other switches *(default
+false)*
+
+## Example
+
+```bash
+Aaru image compare mydisc.cue anotherdisc.mds
+```
+
+## Operating system support
+
+| OS | Supported |
+|----|-----------|
+| FreeBSD | Yes  |
+| macOS   | Yes  |
+| Linux   | Yes  |
+| Windows | Yes  |