accel/tcg: correct typos

Correct typos automatically found with the `typos` tool
<https://crates.io/crates/typos>

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

accel/tcg/ldst_atomicity.c.inc

@@ -76,7 +76,7 @@ static int required_atomicity(CPUState *cpu, uintptr_t p, MemOp memop)
         /*
          * Examine the alignment of p to determine if there are subobjects
          * that must be aligned.  Note that we only really need ctz4() --
-         * any more sigificant bits are discarded by the immediately
+         * any more significant bits are discarded by the immediately
          * following comparison.
          */
         tmp = ctz32(p);