Convert Non-formatted Headings in Markdown

Navigate on the command line to where your md files are and run the following scripts using the Linux sub-system on Windows wsl (since sed is just a better text changing tool).

Converting 'Problem' _ to '### Problem _' for All Md Files

find . -type f -name "*.md" -exec sed -i 's/^Problem/### Problem/g' {} +```

Converting 'Worked Example' _ to '### Worked Example _' for All Md Files

find . -type f -name "*.md" -exec sed -i 's/^Worked Example/### Worked Example/g' {} +