CLEANUP: assorted typo fixes in the code and comments
This is 13n iteration of typo fixes
diff --git a/contrib/opentracing/README-pool b/contrib/opentracing/README-pool
index 09a6c15..8164b04 100644
--- a/contrib/opentracing/README-pool
+++ b/contrib/opentracing/README-pool
@@ -16,7 +16,7 @@
switch individual pools on / off. If a particular pool is not used, memory is
used in a 'normal' way instead, using malloc()/free() functions.
-This is made only from the aspect of debuging the program, i.e. comparing the
+This is made only from the aspect of debugging the program, i.e. comparing the
speed of operation using different methods of working with memory.
In general, it would be better to use memory pools, due to less fragmentation