[PATCH for-6.1 02/10] docs/devel/build-system.rst: Correct typo in example code

[Peter Maydell]

One of the example meson.build fragments incorrectly quotes some
symbols as 'CONFIG_FOO`; the correct syntax here is 'CONFIG_FOO'.
(This isn't a rST formatting mistake because the example is displayed
literally; it's just the wrong kind of quote.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 docs/devel/build-system.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/devel/build-system.rst b/docs/devel/build-system.rst
index ee660a998d0..3baec158f22 100644
--- a/docs/devel/build-system.rst
+++ b/docs/devel/build-system.rst
@@ -235,11 +235,11 @@ Target-independent emulator sourcesets:
   symbol::
 
     # Some targets have CONFIG_ACPI, some don't, so this is not enough
-    softmmu_ss.add(when: 'CONFIG_ACPI`, if_true: files('acpi.c'),
+    softmmu_ss.add(when: 'CONFIG_ACPI', if_true: files('acpi.c'),
                                         if_false: files('acpi-stub.c'))
 
     # This is required as well:
-    softmmu_ss.add(when: 'CONFIG_ALL`, if_true: files('acpi-stub.c'))
+    softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('acpi-stub.c'))
 
 Target-dependent emulator sourcesets:
   In the target-dependent set lives CPU emulation, some device emulation and
-- 
2.20.1