gdb: Fix description for apk, remove backtick

Remove backtick from gdb description text, as that seems to
be recognized as a shell action by compilation with apk,
causing error.

Example from test buildbot:
 rstrip.sh: /builder/shared-workdir/build/sdk/build_dir/target-aarch64_generic_musl/gdb-15.2/ipkg-aarch64_generic/gdb/usr/bin/gdb: executable
 bash: -c: line 1: unexpected EOF while looking for matching ``'
 bash: -c: line 2: syntax error: unexpected end of file
 make[3]: *** [Makefile:123: /builder/shared-workdir/build/sdk/bin/packages/aarch64_generic/base/gdb-15.2-r1.apk] Error 2

Local compilation:
 rstrip.sh: /OpenWrt/aarch64/build_dir/target-aarch64_cortex-a53_musl/gdb-15.2/ipkg-aarch64_cortex-a53/gdb/usr/bin/gdb: executable
 bash: -c: line 1: unexpected EOF while looking for matching ``'
 make[2]: *** [Makefile:123: /OpenWrt/aarch64/bin/packages/aarch64_cortex-a53/base/gdb-15.2-r1.apk] Error 2

Signed-off-by: Hannu Nyman <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16908
Signed-off-by: Hauke Mehrtens <[email protected]>
(cherry picked from commit adb921c34ff220951a699665bb35dc0e3538b3b2)
Link: https://github.com/openwrt/openwrt/pull/17097
Signed-off-by: Petr Štetiar <[email protected]>

package/devel/gdb/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gdb
 PKG_VERSION:=15.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/gdb
@@ -37,7 +37,7 @@ $(call Package/gdb/Default)
 endef
 
 define Package/gdb/description
-GDB, the GNU Project debugger, allows you to see what is going on `inside'
+GDB, the GNU Project debugger, allows you to see what is going on 'inside'
 another program while it executes -- or what another program was doing at the
 moment it crashed.
 endef