📚 Fix typo in 18_http.md

Author: Edouard Alvard

18_http.md

@@ -483,8 +483,8 @@ but we'll start with a rough overview.
 
 {{index "input (HTML tag)", "type attribute"}}
 
-A lot of field types use the 
-`<input>` tag. This tag's `type` attribute is used to select the 
+A lot of field types use the
+`<input>` tag. This tag's `type` attribute is used to select the
 field's style. These are some commonly used `<input>` types:
 
 {{index "password field", checkbox, "radio button", "file field"}}
@@ -1170,7 +1170,7 @@ function to move to a new state.
 The use of `Object.assign` in the example is intended to create a new
 object that is a clone of the old `state.notes`, but with one property
 added or overwritten. `Object.assign` takes its first argument, and
-add all properties from any further arguments to it. Thus, giving it
+adds all properties from any further arguments to it. Thus, giving it
 an empty object will cause it to fill a fresh object. The ((square
 brackets)) notation in the third argument is used to create a property
 whose names is based on some dynamic value.