docs: layout / structure changes

docs/inspect/about.md

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+# **Inspect by hash** :mag:
+
+Blackboard Gradebook Organiser - Inspect gradebook & submissions by hash
+
+## **Description**
+
+With **Inspect by hash** you can inspect the submissions for identical files (by generating and comparing SHA256 hashes) and detect if any files have been submitted by multiple students. The tool has two variations:
+
+[*Inspect gradebook*](usage.md#inspect-gradebook): Before organising a gradebook - for identical files in the files submitted to *Blackboard*
+
+[*Inspect submissions*](usage.md#inspect-submissions): After organising a gradebook - for identical files in the files extracted from any submitted compressed files
+
+## **Features**
+
+- Generates SHA256 hashes for each submitted file, and outputs the list to a CSV file
+
+    - Can exclude files from hashing, if provided with a CSV file listing the file names (only applicable for *Inspect submissions*)
+
+- Compares the generated hashes and finds any duplicates - ignores duplicates if they are by the same student/submission
+
+- Finds all files with the same hash and outputs the list to a CSV file with the following information:
+
+    - *Inspect gradebook*: `Student ID`, `file name`, `SHA256 hash`
+
+    - *Inspect submissions*: `Student ID`, `file path`, `file name`, `SHA256 hash`
+
+- File names and paths listed in the generated CSV files have hyperlinks to the actual files for a quick inspection of the file contents (or running the files, if executable)
+
+*Note:* Further analysis needs to be done manually by inspecting and filtering the generated output, depending on the submission and its files.