Fix external URI images (#124350)

Author: charlotte-hoblik

docs/images/exponential-decay-keyword-exp-1.png

@@ -510,13 +510,11 @@ Next, we show how the computed score looks like for each of the three possible d
 
 When choosing `gauss` as the decay function in the above example, the contour and surface plot of the multiplier looks like this:
 
-% :::{image} https://f.cloud.github.com/assets/4320215/768157/cd0e18a6-e898-11e2-9b3c-f0145078bd6f.png
-% :alt: cd0e18a6 e898 11e2 9b3c f0145078bd6f
-% :::
+:::{image} ../../images/normal-decay-keyword-gauss-1.png
+:::
 
-% :::{image} https://f.cloud.github.com/assets/4320215/768160/ec43c928-e898-11e2-8e0d-f3c4519dbd89.png
-% :alt: ec43c928 e898 11e2 8e0d f3c4519dbd89
-% :::
+:::{image} ../../images/normal-decay-keyword-gauss-2.png
+:::
 
 Suppose your original search results matches three hotels :
 
@@ -531,28 +529,21 @@ Suppose your original search results matches three hotels :
 
 When choosing `exp` as the decay function in the above example, the contour and surface plot of the multiplier looks like this:
 
-% :::{image} https://f.cloud.github.com/assets/4320215/768161/082975c0-e899-11e2-86f7-174c3a729d64.png
-% :alt: 082975c0 e899 11e2 86f7 174c3a729d64
-% :::
-
-% :::{image} https://f.cloud.github.com/assets/4320215/768162/0b606884-e899-11e2-907b-aefc77eefef6.png
-% :alt: 0b606884 e899 11e2 907b aefc77eefef6
-% :::
+:::{image} ../../images/exponential-decay-keyword-exp-1.png
+:::
 
+:::{image} ../../images/exponential-decay-keyword-exp-2.png
+:::
 
 ### Linear decay, keyword `linear` [linear-decay]
 
 When choosing `linear` as the decay function in the above example, the contour and surface plot of the multiplier looks like this:
 
-% :::{image} https://f.cloud.github.com/assets/4320215/768164/1775b0ca-e899-11e2-9f4a-776b406305c6.png
-% :alt: 1775b0ca e899 11e2 9f4a 776b406305c6
-% :::
-
-% :::{image} https://f.cloud.github.com/assets/4320215/768165/19d8b1aa-e899-11e2-91bc-6b0553e8d722.png
-% :alt: 19d8b1aa e899 11e2 91bc 6b0553e8d722
-% :::
-
+:::{image} ../../images/linear-decay-keyword-linear-1.png
+:::
 
+:::{image} ../../images/linear-decay-keyword-linear-2.png
+:::
 
 ## Supported fields for decay functions [_supported_fields_for_decay_functions]