unclear naming instructions for relations

[kirbyquerby]

The documentation for naming relations mentions that relations should be adjectives, but all of the examples are nouns:

docs/docs/reference/schema-lang.md

Lines 116 to 127 in 8ae70d3

	### Naming Relations
	Relations define how one object relates to another object/subject, and thus **relations should be named as adjectives**, read as `{relation name} (of the object)`.
	Examples:
	| Name | Read as |
	| -------- | ---------------------- |
	| `reader` | reader of the document |
	| `writer` | writer of the document |
	| `member` | member of the group |
	| `parent` | parent of the folder |