[tab:container.hash.req] Capitalize start of sentence.

Author: jensmaurer

source/containers.tex

@@ -1729,7 +1729,7 @@
 
 \indexordmem{node_type}%
 \tcode{X::node_type} &
- a specialization of a \exposid{node-handle}
+ A specialization of a \exposid{node-handle}
  class template, such that the public nested types are
  the same types as the corresponding types in \tcode{X}. &
  see~\ref{container.node} &