readme.eng: beautify

docs/readme.eng.md

@@ -425,14 +425,14 @@ ipv4 : Linux allows to send ipv4 fragments but standard firewall rules in OUTPUT
 ipv6 : There's no way for an application to reliably send fragments without defragmentation by conntrack.
 Sometimes it works, sometimes system defragments packets.
 Looks like kernels <4.16 have no simple way to solve this problem. Unloading of nf_conntrack module
-and its dependency nf_defrag_ipv6 helps but this severely impacts functionality.
+and its dependency `nf_defrag_ipv6` helps but this severely impacts functionality.
 Kernels 4.16+ exclude from defragmentation untracked packets.
 See `blockcheck.sh` code for example.
 
 Sometimes it's required to load `ip6table_raw` kernel module with parameter raw_before_defrag=1.
 In openwrt module parameters are specified after module names separated by space in files located in `/etc/modules.d`.
 
-In traditional linux check whether `iptables-legacy` or `iptables-nft` are used. If legacy create the file
+In traditional linux check whether `iptables-legacy` or `iptables-nft` is used. If legacy create the file
 `/etc/modprobe.d/ip6table_raw.conf` with the following content :
 ```
 options ip6table_raw raw_before_defrag=1