minor language adjustment

lib/README.curl_off_t

@@ -9,7 +9,7 @@ LARGE. The type is 64bit large on most modern platforms.
 Transition from < 7.19.0 to >= 7.19.0
 -------------------------------------
 
-Applications that used libcurl before 7.19.0 that is rebuilt with a libcurl
+Applications that used libcurl before 7.19.0 that are rebuilt with a libcurl
 that is 7.19.0 or later may or may not have to worry about anything of
 this. We have made a significant effort to make the transition really seamless
 and transparant.
@@ -24,7 +24,7 @@ o Your app is using or will after the transition use a libcurl that doesn't
   support LFS at all, but your system and compiler support 64bit data types.
 
 In both these cases, the curl_off_t type will now (after the transition) be
-64bit where it previously were 32bit. This will cause a binary incompatibility
+64bit where it previously was 32bit. This will cause a binary incompatibility
 that you MAY need to deal with.
 
 Benefits