Fix some typos in the llvm doc

llvm-svn: 260855
diff --git a/llvm/docs/Statepoints.rst b/llvm/docs/Statepoints.rst
index b0e4f81..1e46152 100644
--- a/llvm/docs/Statepoints.rst
+++ b/llvm/docs/Statepoints.rst
@@ -262,7 +262,7 @@
 collector-aware ("managed code") to call code that is not collector-aware
 ("unmanaged code"). It is common that such calls must also be safepoints, since
 it is desirable to allow the collector to run during the execution of
-unmanaged code. Futhermore, it is common that coordinating the transition from
+unmanaged code. Furthermore, it is common that coordinating the transition from
 managed to unmanaged code requires extra code generation at the call site to
 inform the collector of the transition. In order to support these needs, a
 statepoint may be marked as a GC transition, and data that is necessary to