design: fix bullet in generics proposal

Change-Id: I92aa64d5c407de7d5ca7c27bbbdac184ed08279c
Reviewed-on: https://go-review.googlesource.com/22076
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/design/15292-generics.md b/design/15292-generics.md
index 06b2ea6..07028e7 100644
--- a/design/15292-generics.md
+++ b/design/15292-generics.md
@@ -113,7 +113,7 @@
   with the slice’s element type.
 * Restrict the set of types that may be used to instantiate a generic type, to
   ensure that the generic type is only instantiated with types that support the
-* required operations.
+  required operations.
 * Do not require an explicit relationship between the definition of a generic
   type or function and its use.  That is, programs should not have to
   explicitly say *type T implements generic G*.