CMS: Particle Discovery Lab + NanoAOD trigger update

data/docs/cms-guide-for-education/cms-guide-for-education.md

@@ -56,6 +56,7 @@ If you want a more detailed understanding of particle physics or an introduction
 For example:
 
 * [Particle Physics Playground](/record/52) provides you with further hands-on activities with open data from CMS and other experiments.
+* [Particle Discovery Lab](/record/49) is a 6-hour computational exercise for intermediate university students that reinforces physics course concepts like relativistic energy-momentum conservation and provides a platform for teaching analysis of histograms and propagation of uncertainties.
 * [Computing Methods in High-Energy Physics](/record/61) is an introductory course on computing in high-energy physics.
 * [CMS HEP Tutorial](/record/50) is a one-week course with a basic introduction to fundamental concepts of data analysis in HEP experiments using CMS Open Data.
 

data/docs/cms-guide-trigger-system/cms-guide-trigger-system.json

@@ -8,7 +8,7 @@
       "CMS"
     ],
     "short_description": {
-      "content": "Physically, an event is the result of a single readout of the detector electronics and the signals that will (in general) have been generated by particles, tracks, energy deposits, present in a number of bunch crossings. The task of the online Trigger and Data Acquisition System (TriDAS) is to select,..."
+      "content": "An event is the result of a single reading of the detector electronics capturing signals generated by particles from several bunch crossings. The online Trigger and Data Acquisition System (TriDAS) is tasked with selecting..."
     },
     "slug": "cms-guide-trigger-system",
     "tags": [