Update README.md

NielsdeBlaauw · web-flow · commit 0fb2f878afd4 · 2020-03-14T11:54:31.000+01:00
diff --git a/README.md b/README.md
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 # facetwp-wp-cli
 Run indexing of FacetWP via WP-CLI
 
-`wp facet index --post-type=[post_type]`
+`wp facet index [--post-type=post_type]`
