Minor edit

Author: debadair

docs/painless/painless-getting-started.asciidoc

@@ -64,7 +64,7 @@ GET hockey/_search
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 // CONSOLE
 
-Alternatively, you could do the same thing using a script field instead of a function score:
+Alternatively, you can do the same thing using a script field instead of a function score:
 
 [source,js]
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