A couple typo fixes to manual
@@ -1418,7 +1418,7 @@ Position, !Velocity
This signature matches all entities that have `Position`, but not have `Velocity`. An expression with a `NOT` column does not pass any data into a system, which means that the `ecs_term` function is guaranteed to return `NULL` for a column.
#### Optional
-The optional operator allows a signature to both match entities with and without a specific component. An exampole with an optional operator is:
+The optional operator allows a signature to both match entities with and without a specific component. An example with an optional operator is:
```
Position, ?Velocity
