doc: fixed some typos

Author: tokers

README.md

@@ -22,7 +22,7 @@ This Nginx module is currently considered experimental. Issues and PRs are welco
 
 # Synopsis
 
-```nginx.conf
+```nginx
 
 # specify the dictionary
 zstd_dict_file /path/to/dict;
@@ -48,7 +48,7 @@ To use this module, configure your nginx branch with `--add-module=/path/to/zstd
 
 * You can environment variables `ZSTD_INC` and `ZSTD_LIB` to specify the path to `zstd.h` and the path to zstd shared library represently.
 * static library is tried prior to dynamic library, since this Nginx module uses some **advanced APIs** where static linking is recommended.
-* System zstd bundle will be tries if `ZSTD_INC` and `ZSTD_LIB` are not specified.
+* System zstd bundle will be linked if `ZSTD_INC` and `ZSTD_LIB` are not specified.
 
 # Directives