[DOC] state.md, build.md and chain directory documents translate in Korean. (#2649)

*  add md files for translation.

*  start to translation fast-sync, code_structure. add file build_KR.md, states_KR.md

* add dandelion_KR.md && simulation_KR.md for Korean translation.

*  add md files for translation.

*  start to translation fast-sync, code_structure. add file build_KR.md, states_KR.md

* add dandelion_KR.md && simulation_KR.md for Korean translation.

* remove some useless md files for translation. this is rearrange set up translation order.

*  add dot end of sentence & translate build.md in korean

*  remove fast-sync_KR.md

*  finish build_KR.md translation

*  finish build_KR.md translation

*  finish translation state_KR.md & add phrase in state.md to move other language md file

* translate blocks_and_headers.md && chain_sync.md in Korean

*  add . in chain_sync.md , translation finished in doc/chain dir.

* fix some miss typos

doc/build.md

@@ -1,6 +1,6 @@
 # Grin - Build, Configuration, and Running
 
-*Read this in other languages: [Español](build_ES.md).*
+*Read this in other languages: [Español](build_ES.md), [Korean](build_KR.md).*
 
 ## Supported Platforms
 
@@ -115,7 +115,7 @@ You can bind-mount your grin cache to run inside the container.
 docker run -it -d -v $HOME/.grin:/root/.grin grin
 ```
 If you prefer to use a docker named volume, you can pass `-v dotgrin:/root/.grin` instead.
-Using a named volume copies default configurations upon volume creation
+Using a named volume copies default configurations upon volume creation.
 
 ## Cross-platform builds