Fix new typos found by codespell
diff --git a/lib/common/pool.h b/lib/common/pool.h
index eb22ff5..cca4de7 100644
--- a/lib/common/pool.h
+++ b/lib/common/pool.h
@@ -47,7 +47,7 @@
 /*! POOL_resize() :
  *  Expands or shrinks pool's number of threads.
  *  This is more efficient than releasing + creating a new context,
- *  since it tries to preserve and re-use existing threads.
+ *  since it tries to preserve and reuse existing threads.
  * `numThreads` must be at least 1.
  * @return : 0 when resize was successful,
  *           !0 (typically 1) if there is an error.