Update docs.

Docs/Urho3D.dox

@@ -206,7 +206,7 @@ Urho3D uses the following third-party libraries:
 - libcpuid 0.4.0 (https://github.com/anrieff/libcpuid)
 - Lua 5.1 (https://www.lua.org)
 - LuaJIT 2.1.0+ (http://www.luajit.org)
-- LZ4 r131 (https://github.com/Cyan4973/lz4)
+- LZ4 1.7.5 (https://github.com/lz4/lz4)
 - MojoShader (https://icculus.org/mojoshader)
 - Mustache 1.0 (https://mustache.github.io, https://github.com/kainjow/Mustache)
 - nanodbc 2.12.4 (https://lexicalunit.github.io/nanodbc)

README.md

@@ -169,7 +169,7 @@ Urho3D uses the following third-party libraries:
 - libcpuid 0.4.0 (https://github.com/anrieff/libcpuid)
 - Lua 5.1 (https://www.lua.org)
 - LuaJIT 2.1.0+ (http://www.luajit.org)
-- LZ4 r131 (https://github.com/Cyan4973/lz4)
+- LZ4 1.7.5 (https://github.com/lz4/lz4)
 - MojoShader (https://icculus.org/mojoshader)
 - Mustache 1.0 (https://mustache.github.io, https://github.com/kainjow/Mustache)
 - nanodbc 2.12.4 (https://lexicalunit.github.io/nanodbc)