Update blockchaindialog.ui text
Update blockchaindialog.ui text

In the 'Show More Details" window (Help --> Debug window --> Show More Details) there are two grammatical errors that I have addressed.
In the third paragraph, the word "world" should be "world's".
In the fourth paragraph, the word "mean" should be "means".
I made changes to address this.
deeponion/deeponion,deeponion/deeponion,deeponion/deeponion,deeponion/deeponion,deeponion/deeponion,deeponion/deeponion