docs: fix node names for automake and aclocal invocations With the older node names, an "info automake" command issued from the command line would have opened the node about the invocation of the automake program, rather than the Top node of the automake documentation. To invoke the Top node, one had to issue the command "info Automake" instead (note the different capitalization). This was suboptimal, and certainly confusing. With this change, "info automake" will open the Top node of the automake documentation; to access the nodes about the invocation of the automake and aclocal program, one has now to issue "info automake-invocation" and "info aclocal-invocation" respectively. This change fixes automake bug#8071. See also commits `v2.61a-22-ge9215d1' and `v2.61a-72-g8c07b48' in the autoconf git repository, which tackled a similar issue. * doc/automake.texi (@direntry): Rename nodes `aclocal' and `automake' to `aclocal-invocation' and `automake-invocation' respectively. * NEWS: Update.