docs/syscall_descriptions_syntax.md: remove a redundant square bracket

Remove a redundant square bracket in section "Expression syntax".

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/syscall_descriptions_syntax.md b/docs/syscall_descriptions_syntax.md
index cad8b60d6..31a19b417 100644
--- a/docs/syscall_descriptions_syntax.md
+++ b/docs/syscall_descriptions_syntax.md
@@ -557,7 +557,7 @@ If you want to reference a field's value, you can do it via
 sub_struct {
   f0 int
   # Reference a field in a parent struct.
-  f1 int (if[value[struct:f2]]) # Same as if[value[struct:f2] != 0]].
+  f1 int (if[value[struct:f2]]) # Same as if[value[struct:f2] != 0].
 }
 
 struct {