[basic.scope.pdecl] Capitalize note. (#1590)

Author: Eelis

source/basic.tex

@@ -626,7 +626,7 @@
 \pnum
 \begin{note}
 \indextext{name hiding}%
-a name from an outer scope remains visible up
+A name from an outer scope remains visible up
 to the point of declaration of the name that hides it. \begin{example}
 
 \begin{codeblock}