Update modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc

Co-authored-by: Hannes Voigt <[email protected]>

Author: JPryce-Aklundh

modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc

@@ -65,7 +65,7 @@ label:deprecated[]
 ----
 CASE x ... WHEN is :: STRING THEN ... END
 ----
-a| Using an unescaped variable named `is`(or any casing variant, like `IS`) as a `WHEN` operand in a simple xref:queries/case.adoc#case-simple[simple `CASE`] expression is deprecated.
+a| Using an unescaped variable named `is` (or any casing variant, like `IS`) as a `WHEN` operand in a xref:queries/case.adoc#case-simple[simple `CASE`] expression is deprecated.
 To continue using variables with this name in simple `CASE` expressions, use backticks to escape the variable name: `CASE x ... WHEN ++`is`++ :: STRING THEN ... END`
 
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