docs: migration-guide.md: Fixed formatting so code examples are inside of lists and lists continue after the code
docs: migration-guide.md: Fixed formatting so code examples are inside of lists and lists continue after the code

NightOwl888/lucenenet,apache/lucenenet,apache/lucenenet,NightOwl888/lucenenet,jeme/lucenenet,apache/lucenenet,NightOwl888/lucenenet,apache/lucenenet,jeme/lucenenet,jeme/lucenenet,jeme/lucenenet,NightOwl888/lucenenet