CLEANUP: assorted typo fixes in the code and comments
This is 21st iteration of typo fixes
diff --git a/doc/management.txt b/doc/management.txt
index 261c74d..80755be 100644
--- a/doc/management.txt
+++ b/doc/management.txt
@@ -1721,7 +1721,7 @@
The experimental mode is used to access to extra features still in
development. These features are currently not stable and should be used with
- care. They may be subject to breaking changes accross versions.
+ care. They may be subject to breaking changes across versions.
expert-mode [on|off]
This command is similar to experimental-mode but is used to toggle the