Update source/numerics.tex

Co-authored-by: Jonathan Wakely <[email protected]>

Author: AlisdairM

source/numerics.tex

@@ -9161,8 +9161,7 @@
 \rSec2[valarray.range]{Range access}
 
 \pnum
-The \tcode{iterator} type
-is a type that meets the requirements of a mutable
+The \tcode{iterator} type meets the requirements of a mutable
 \oldconcept{RandomAccessIterator}\iref{random.access.iterators}
 and models \libconcept{contiguous_iterator}\iref{iterator.concept.contiguous}.
 Its \tcode{value_type} is the template