fix some typos

docs/adding-new-fields.md

@@ -2,7 +2,7 @@
 
 This document is a checklist for adding a new building attribute to the system. It's split into three sections - actions that apply when adding any field, and additional steps to add a field that will be visualised on the map.
 The second section would be required when adding a new category or when changing which field should be visualised for a category.
-The third section would appply to any data which can be ammended via the API. 
+The third section would apply to any data which can be amended via the API.
 When adding a new attribute a set of seed data should be identified, the base data set for many fields is Polly Hudsons PhD data set. This data set is required to;
 - Test visualisation elements (map styling)
 - Provide some data for users to relate to and encourage them to fill in the field

docs/setup-hyper-v-vm.md

@@ -1,6 +1,6 @@
 # Setting up a Hyper-V Virtual Machine
 
-#### Prequisites
+#### Prerequisites
 
 This guide is written for Hyper-V running on MS Windows Server, in this case Windows Server Datacenter 2019.
 
@@ -46,7 +46,7 @@ At the next screen configure the network adapter. This will typically be a Ether
 
 ---
 
-At the next screen configure the virtual hard disk. It makes sense to create a dedicated virtual hard disk and to store it in a sensible location. The size choosen *is important* as (unlike the RAM value) it is not trivial to change this later (see diagram below).
+At the next screen configure the virtual hard disk. It makes sense to create a dedicated virtual hard disk and to store it in a sensible location. The size chosen *is important* as (unlike the RAM value) it is not trivial to change this later (see diagram below).
 
 ![](./images/hyper-v/hyper_v_6.png)