THRIFT-2849: spelling errors fixed using codespell tool

Client: All
Patch: Anatol Pomozov

This closes #281
diff --git a/lib/hs/README.md b/lib/hs/README.md
index fe525bd..c7233f3 100755
--- a/lib/hs/README.md
+++ b/lib/hs/README.md
@@ -89,7 +89,7 @@
   data MyIface = MyIface
 
 and then declare it an instance of each iface class, starting with the superest
-class and proceding down (all the while defining the methods).  Then pass your
+class and proceeding down (all the while defining the methods).  Then pass your
 label to process as the handler.
 
 Processor