DOC: fix some spelling issues over multiple files
This is from the output of codespell and may be backported.
diff --git a/doc/management.txt b/doc/management.txt
index 36e47a4..2600478 100644
--- a/doc/management.txt
+++ b/doc/management.txt
@@ -1986,7 +1986,7 @@
of reports of abnormal behaviours. A typical example would be a properly
running process never sleeping and eating 100% of the CPU. The output fields
will be made of one line per metric, and per-thread counters on the same
- line. These counters are 32-bit and will wrap during the process' life, which
+ line. These counters are 32-bit and will wrap during the process's life, which
is not a problem since calls to this command will typically be performed
twice. The fields are purposely not documented so that their exact meaning is
verified in the code where the counters are fed. These values are also reset