improve docs readability 📝

docs/journeys.md

@@ -334,7 +334,7 @@ departure of first (later) journey 2017-12-17T19:19:00+01:00
 
 If you pass `polylines: true`, each journey leg will have a `polyline` field. Refer to [the section in the `trip()` docs](trip.md#polyline-option) for details.
 
-If you pass `scheduledDays: true`, each journey will have a `scheduledDays` field looking like this:
+If you pass `scheduledDays: true`, each journey will have a `scheduledDays` object looking like this:
 
 ```js
 {

docs/radar.md

@@ -47,6 +47,7 @@ The response may look like this:
 		latitude: 52.521508,
 		longitude: 13.411267
 	},
+
 	line: {
 		type: 'line',
 		id: 's9',
@@ -68,6 +69,7 @@ The response may look like this:
 	},
 	direction: 'S Flughafen Berlin-Schönefeld',
 	trip: 31463,
+
 	nextStopovers: [ {
 		stop: {
 			type: 'stop',

docs/trip.md

@@ -55,6 +55,7 @@ The response looked like this:
 ```js
 {
 	id: '1|31431|28|86|17122017',
+
 	origin: {
 		type: 'station',
 		id: '900000260005',

docs/writing-a-profile.md

@@ -1,14 +1,14 @@
 # Writing a profile
 
-**Per HAFAS endpoint, `hafas-client` has an endpoint-specific customisation called *profile***, which may for example do the following:
+**Per HAFAS endpoint, `hafas-client` has an endpoint-specific customisation called *profile*.** A profile may, for example, do the following:
 
 - handle the additional requirements of the endpoint (e.g. authentication),
 - extract additional information from the data provided by the endpoint,
 - guard against triggering bugs of certain endpoints (e.g. time limits).
 
-This guide is about writing such a profile. If you just want to use an already supported endpoint, refer to the [API documentation](readme.md) instead.
+This guide is about writing such a profile. If you just want to use an already supported endpoint, refer to the [main readme](../readme.md) instead.
 
-*Note*: **If you get stuck, ask for help by [creating an issue](https://github.com/public-transport/hafas-client/issues/new)!** We want to help people expand the scope of this library.
+*Note*: **If you get stuck, ask for help by [creating an issue](https://github.com/public-transport/hafas-client/issues/new)**; We're happy to help you expand the scope of this library!
 
 ## 0. How do the profiles work?
 
@@ -21,7 +21,7 @@ A profile may consist of three things:
 - **flags indicating which features are supported by the endpoint** – e.g. `trip`
 - **methods overriding the [default profile](../lib/default-profile.js)**
 
-As an example, let's say we have an [Austrian](https://en.wikipedia.org/wiki/Austria) endpoint:
+Let's use a fictional endpoint for [Austria](https://en.wikipedia.org/wiki/Austria) as an example:
 
 ```js
 const myProfile = {
@@ -31,7 +31,7 @@ const myProfile = {
 }
 ```
 
-Assuming their HAFAS endpoint returns all lines names prefixed with `foo `, We can strip them like this:
+Assuming their HAFAS endpoint returns all line names prefixed with `foo `, we can adapt our profile to clean them:
 
 ```js
 // get the default line parser