Use https for openlayers.org

doc/tutorials/custom-builds.md

@@ -95,7 +95,7 @@ var map = new ol.Map({
 });
 ```
 
-Note that this JavaScript code corresponds to OpenLayers 3's [`simple`](http://openlayers.org/en/master/examples/simple.html) example.
+Note that this JavaScript code corresponds to OpenLayers 3's [`simple`](https://openlayers.org/en/master/examples/simple.html) example.
 
 You are now ready to create your first OpenLayers 3 build. Use the following command to create the build:
 
@@ -180,7 +180,7 @@ Note that `build.js` currently requires you to enter an output file and will wri
 
 ## A more complicated example
 
-Now let's try a more complicated example: [`heatmaps-earthquakes`](http://openlayers.org/en/master/examples/heatmap-earthquakes.html). The build configuration file looks like this:
+Now let's try a more complicated example: [`heatmaps-earthquakes`](https://openlayers.org/en/master/examples/heatmap-earthquakes.html). The build configuration file looks like this:
 
 ```json
 {

doc/tutorials/raster-reprojection.md

@@ -35,10 +35,10 @@ var map = new ol.Map({
 If a source (based on `ol.source.TileImage` or `ol.source.Image`) has a projection different from the current `ol.View`’s projection then the reprojection happens automatically under the hood.
 
 ### Examples
-- [Raster reprojection demo](http://openlayers.org/en/master/examples/reprojection.html)
-- [OpenStreetMap to WGS84 reprojection](http://openlayers.org/en/master/examples/reprojection-wgs84.html)
-- [Reprojection with EPSG.io database search](http://openlayers.org/en/master/examples/reprojection-by-code.html)
-- [Image reprojection](http://openlayers.org/en/master/examples/reprojection-image.html)
+- [Raster reprojection demo](https://openlayers.org/en/master/examples/reprojection.html)
+- [OpenStreetMap to WGS84 reprojection](https://openlayers.org/en/master/examples/reprojection-wgs84.html)
+- [Reprojection with EPSG.io database search](https://openlayers.org/en/master/examples/reprojection-by-code.html)
+- [Image reprojection](https://openlayers.org/en/master/examples/reprojection-image.html)
 
 ### Custom projection
 The easiest way to use a custom projection is to add the [Proj4js](http://proj4js.org/) library to your project and then define the projection using a proj4 definition string.
@@ -122,7 +122,7 @@ Although this is mathematically correct behavior of the inverse transformation,
 A possible general solution would be to calculate the forward transformation for every vertex as well - but this would significantly decrease performance (especially for computationally expensive transformations).
 
 Therefore a recommended workaround is to define a proper visibility extent on the `ol.layer.Tile` in the view projection.
-Setting such a limit is demonstrated in the [reprojection demo example](http://openlayers.org/en/master/examples/reprojection.html).
+Setting such a limit is demonstrated in the [reprojection demo example](https://openlayers.org/en/master/examples/reprojection.html).
 
 ### Resolution calculation
 When determining source tiles to load, the ideal source resolution needs to be calculated.