fix typos (#1703)

CONTRIBUTING.md

@@ -65,7 +65,7 @@ Also pay attention to the following:
     -   Match any but a guaranteed terminating character: `[^;]+`, for example to match the entire assigned value in `var a=b||c||func();`,
         `var .{1,2}=([^;]+);`
     -   If you don't care about that part, just match a bunch of chars: `.{0,50}`, for example to extract the variable "b" in `createElement("div",{a:"foo",c:"bar"},b)`, `createElement\("div".{0,30},(.{1,2})\),`. Note the `.{0,30}`, this is essentially the same as `.+`, but safer as you can't end up accidently eating thousands of characters
--   Additionally, as you might have noticed, all of the appove approaches use regex groups (`(...)`) to capture the variable name. You can then use those groups in your replacement to access those variables dynamically
+-   Additionally, as you might have noticed, all of the above approaches use regex groups (`(...)`) to capture the variable name. You can then use those groups in your replacement to access those variables dynamically
 
 #### "replace"
 

docs/1_INSTALLING.md

@@ -63,7 +63,7 @@ Then fully close Discord from your taskbar or task manager, and restart it. Venc
 
 If you're using Discord already, go into the `Updater` tab in settings.
 
-Sometimes it may be neccessary to manually update if the GUI updater fails.
+Sometimes it may be necessary to manually update if the GUI updater fails.
 
 To pull latest changes: