Fix typo in `InternalDocs/garbage_collector.md`.
pointers found while following references are pushed to the stack, rather than
put in the buffer. When dequeuing objects from the buffer, we will "prime" the
buffer if the current length drops below the low threshold. Priming means
-popping objects from the stack and enqueing them into the buffer. While
+popping objects from the stack and enqueuing them into the buffer. While
priming, we will fill it only until the high threshold is reached.
To measure the effectiveness of the buffer, some benchmark programs were run