Fix sphinx

Author: LowriJenkins

doc/iocs/tools/icpconfig.md

@@ -6,6 +6,6 @@ ICP config is a set of C functions that are called by every IOC on startup to de
 * `\Instrument\Settings\globals.txt` - See [here](../testing/Running-IOCs)
 * `\Instrument\var\tmp\test_macros.txt` - A file create by the IOC_test_framework to create macros for testing. Only used if the environment variables `TESTDEVSIM=yes` or `TESTRECSIM=yes`.
 
-Macros are loaded in the order above, such that default values are overwridden if any other source is presented, `globals.txt` will override macros in the configuration and test macros will override all others. See diagram below for an idea of how this works.
+Macros are loaded in the order above, such that default values are overwritten if any other source is presented, `globals.txt` will override macros in the configuration and test macros will override all others. See diagram below for an idea of how this works.
 
 ![](loading_macros.png)