[meta] Rename stable label "meta.reflection.synop" to "meta.syn"

Author: tkoeppe

source/basic.tex

@@ -2185,7 +2185,7 @@
 The set of entities
 is determined in the following way:
 \begin{itemize}
-\item If \tcode{T} is \tcode{std::meta::info}\iref{meta.reflection.synop},
+\item If \tcode{T} is \tcode{std::meta::info}\iref{meta.syn},
 its associated set of entities is the singleton containing
 the enumeration type \tcode{std::meta::operators}\iref{meta.reflection.operators}.
 \begin{note}

source/compatibility.tex

@@ -253,8 +253,7 @@
 \libheaderref{hive},
 \libheaderrefx{inplace_vector}{inplace.vector.syn},
 \libheaderref{linalg},
-%FIXME: \libheaderref{meta} after renaming to meta.syn
-\libheaderrefx{meta}{meta.type.synop},
+\libheaderref{meta},
 \libheaderref{rcu},
 \libheaderref{simd},
 \libheaderref{stdbit.h},

source/meta.tex

@@ -2572,8 +2572,7 @@
 
 \rSec1[meta.reflection]{Reflection}
 
-%FIXME: Jens said this should be [meta.syn]
-\rSec2[meta.reflection.synop]{Header \tcode{<meta>} synopsis}
+\rSec2[meta.syn]{Header \tcode{<meta>} synopsis}
 
 \indexheader{meta}%
 \begin{codeblock}