configure: change "found" to "find"

Change "ERROR: configure was not able to found it" to
"ERROR: configure was not able to find it".

Signed-off-by: Sebastian Herbszt <herbszt@gmx.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/configure b/configure
index 494e9ce..e0a2874 100755
--- a/configure
+++ b/configure
@@ -807,7 +807,7 @@
 
   echo "ERROR"
   echo "ERROR: User requested feature $feature"
-  echo "ERROR: configure was not able to found it"
+  echo "ERROR: configure was not able to find it"
   echo "ERROR"
   exit 1;
 }