doc: Fix a pinch of typos in extend.texi

gcc/ChangeLog:

	* doc/extend.texi (C++ Concepts) <forall>: Remove extraneous
	parenthesis.  Fix misnamed index entry.
	<concept>: Fix misnamed index entry.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 69b21a75e6214f74ce1228ba15f8ec3eec7d73a9..ed8b9c8a87b407796c8c01c7066e732c639f9a1d 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -25460,12 +25460,12 @@ assumption is valid. For example, @code{assume(n > 0)}.
 @item axiom
 Introduces an axiom definition. Axioms introduce requirements on values.
 
-@kindex axiom
+@kindex forall
 @item forall
 Introduces a universally quantified object in an axiom. For example,
-@code{forall (int n) n + 0 == n}).
+@code{forall (int n) n + 0 == n}.
 
-@kindex axiom
+@kindex concept
 @item concept
 Introduces a concept definition. Concepts are sets of syntactic and semantic
 requirements on types and their values.