Proof LUNAR_LANDING_GUIDANCE_EQUATIONS (Page 803-812) #606

[sidemt]

Part 2 of the proofreading PR for issue #606
Checked pages 803 - 812

Notes:
(1)
I'm not sure if the markers at the following parts should be _ or -
[Page 803]
L 285, 290 (R0218, R0223 in the original image)
[Page 804]
L 368, 372 (0288, 0292 in the original image)
[Page 805, 806]
L423-441 (R0338-R0346 in the original image)
[Page 808]
L545-555 (R0438-R0446 in the original image)

(2)
At the beginning of Page 806 there is a comment saying:

Page 806 actually starts one line earlier but that would separate the markers from their variables

So I did not change this.