doc: fixed a typo in README.md.

Signed-off-by: Thibault Charbonnier <thibaultcha@me.com>
openresty · Apr 28, 2019 · 7be0a4d · 7be0a4d
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diff --git a/README.markdown b/README.markdown
@@ -6738,7 +6738,7 @@ ngx.shared.DICT.flush_expired
 
 Flushes out the expired items in the dictionary, up to the maximal number specified by the optional `max_count` argument. When the `max_count` argument is given `0` or not given at all, then it means unlimited. Returns the number of items that have actually been flushed.
 
-Unlike the [flush_all](#ngxshareddictflush_all) method, this method actually free up the memory used by the expired items.
+Unlike the [flush_all](#ngxshareddictflush_all) method, this method actually frees up the memory used by the expired items.
 
 This feature was first introduced in the `v0.6.3` release.
 

diff --git a/doc/HttpLuaModule.wiki b/doc/HttpLuaModule.wiki
@@ -5667,7 +5667,7 @@ See also [[#ngx.shared.DICT.flush_expired|ngx.shared.DICT.flush_expired]] and [[
 
 Flushes out the expired items in the dictionary, up to the maximal number specified by the optional <code>max_count</code> argument. When the <code>max_count</code> argument is given <code>0</code> or not given at all, then it means unlimited. Returns the number of items that have actually been flushed.
 
-Unlike the [[#ngx.shared.DICT.flush_all|flush_all]] method, this method actually free up the memory used by the expired items.
+Unlike the [[#ngx.shared.DICT.flush_all|flush_all]] method, this method actually frees up the memory used by the expired items.
 
 This feature was first introduced in the <code>v0.6.3</code> release.