Fixed a spelling error (#5373)

Change have have to have

docs/wiki/development/setting-up-the-development-environment.md

@@ -131,6 +131,6 @@ class CfgSettings {
 
 Files must exist in the built PBOs for file patching to work. If you create a new file you must rebuild the PBO or Arma will not find it in your file paths.
 
-Configs are not patched during run time, only at load time. You do not have have to rebuild a PBO to make config changes, just restart Arma. You can get around this though if you are on the dev branch of Arma 3 and running the [diagnostic exe](https://community.bistudio.com/wiki/Arma_3_Diagnostics_Exe). That includes `diag_mergeConfigFile` which takes a full system path (as in `diag_mergeConfigFile  ["p:\z\ace\addons\my_module\config.cpp"]`) and allows you selectively reload config files.
+Configs are not patched during run time, only at load time. You do not have to rebuild a PBO to make config changes, just restart Arma. You can get around this though if you are on the dev branch of Arma 3 and running the [diagnostic exe](https://community.bistudio.com/wiki/Arma_3_Diagnostics_Exe). That includes `diag_mergeConfigFile` which takes a full system path (as in `diag_mergeConfigFile  ["p:\z\ace\addons\my_module\config.cpp"]`) and allows you selectively reload config files.
 
 If you need to add/remove files, then you'll need to run `build.py` again without the game running, and restart. That is all that is required to add new files for further use in testing.