/** A DWARF expression
*
* DWARF defines a simple stack-based VM for evaluating expressions
- * (such as locations of variables, etc.): a DWARF expressions is
+ * (such as locations of variables, etc.): a DWARF expression is
* just a sequence of dwarf instructions. We currently directly use
* `Dwarf_Op` from `dwarf.h` for dwarf instructions.
*/