changed the word developers to engineers (#91)

data/competencies.yml

@@ -136,7 +136,7 @@
   domain: null
 
 - id: 458cfd7f-b621-462e-ad7f-90870e1d5cfc
-  summary: Writes clear tickets, issues and bug reports that contain the necessary amount of detail to be easily picked up by other developers
+  summary: Writes clear tickets, issues and bug reports that contain the necessary amount of detail to be easily picked up by other engineers
   examples: []
   description: null
   level: junior-to-mid
@@ -742,7 +742,7 @@
 - id: 1ee4d2b9-8160-42e0-a763-f45703abc6d5
   summary: Helps resolve disagreements healthily
   examples:
-    - Helps the team navigate disagreements over the best way to do things. Gets agreement and buy-in from developers on a solution to a problem
+    - Helps the team navigate disagreements over the best way to do things. Gets agreement and buy-in from engineers on a solution to a problem
     - Encourages team members to speak freely in retrospectives
     - Encourages team members to treat eachother empathetically
   description: null

data/levels.yml

@@ -3,7 +3,7 @@
 - id: junior-to-mid
   name: Junior to Mid
   summary: >
-    Mid level developers should be proficient in the technical systems
+    Mid level engineers should be proficient in the technical systems
     that they are working on. They should be aware and guided by the wider
     context of their work. They should take responsibility for their work
     and own their personal development. They should be working as part of