[conv.rank] Fix typo

Author: Andreas-Krug

source/basic.tex

@@ -5812,7 +5812,7 @@
 has a rank equal to the rank of \keyword{double}.
 \begin{tailnote}
 The treatment of \tcode{std::float64_t} differs from
-that of the analoguous \tcode{_Float64} in C,
+that of the analogous \tcode{_Float64} in C,
 for example on platforms where all of
 \tcode{\keyword{long} \keyword{double}},
 \keyword{double}, and