Version: Fix minor spelling mistake
# Version
-The version of Elektra is handeled with the kdb.h macros
+The version of Elektra is handled with the kdb.h macros
`KDB_VERSION` which is a string and `KDB_VERSION_MAJOR`,
`KDB_VERSION_MINOR` and `KDB_VERSION_MICRO` which are
numbers. They represent the public announced version
