Documentation improvement decode option copy_strings.

README.md

@@ -52,12 +52,13 @@ The options for decode are:
   will ensure that the parsed object only contains a single entry
   containing the last value seen. This mirrors the parsing beahvior
   of virtually every other JSON parser.
-* `copy_strings` - Normaly when strings are decoded they are created
-  as sub-binaries of the input data. With some workloads this can lead
-  to an undeseriable bloating of memory when a few small strings in JSON
-  keep a reference to the full JSON document alive. Setting this option
-  will instead allocate new binaries for each string to avoid keeping
-  the original JSON document around after garbage collection.
+* `copy_strings` - Normally, when strings are decoded, they are
+  created as sub-binaries of the input data. With some workloads, this
+  leads to an undesirable bloating of memory: Strings in the decode
+  result keep a reference to the full JSON document alive. Setting
+  this option will instead allocate new binaries for each string, so
+  the original JSON document can be garbage collected even though
+  the decode result is still in use.
 * `{bytes_per_red, N}` where N >= 0 - This controls the number of
   bytes that Jiffy will process as an equivalent to a reduction. Each
   20 reductions we consume 1% of our allocated time slice for the current