clarify _2023RVR signals in DETAILS.md

Author: minhkhul

nssp/DETAILS.md

@@ -4,7 +4,7 @@ We import the NSSP Emergency Department Visit data, including percentage and smo
 
 There are 2 sources we grab data from for nssp:
 - Primary source: https://data.cdc.gov/Public-Health-Surveillance/NSSP-Emergency-Department-Visit-Trajectories-by-St/rdmq-nq56/data_preview
-- Secondary source: https://data.cdc.gov/Public-Health-Surveillance/2023-Respiratory-Virus-Response-NSSP-Emergency-Dep/7mra-9cq9/data_preview
+- Secondary (2023RVR) source: https://data.cdc.gov/Public-Health-Surveillance/2023-Respiratory-Virus-Response-NSSP-Emergency-Dep/7mra-9cq9/data_preview
 There are 8 signals output from the primary source and 4 output from secondary. There are no smoothed signals from secondary source.
 
 Note that the data produced from secondary source are mostly the same as their primary source equivalent, with past analysis shows around 95% of datapoints having less than 0.1 value difference and the other 5% having a 0.1 to 1.2 value difference. 
@@ -16,7 +16,7 @@ Primary source:
 * `national`: just `us` for now, reported from source
 * `hhs`, `hrr`, `msa`: not reported from source, so we computed them from county-level data using a weighted mean. Each county is assigned a weight equal to its population in the last census (2020).
 
-Secondary source:
+Secondary (2023RVR) source:
 * `state`: reported from source
 * `hhs`: reported from source
 * `national`: reported from source
@@ -26,5 +26,5 @@ Secondary source:
 *  `percent_visits_combined`: sum of the three percentages of visits for flu, rsv and covid.
 *  `smoothed_percent_visits_covid`, `smoothed_percent_visits_rsv`, `smoothed_percent_visits_influenza`: 3 week moving average of the percentage of emergency department patient visits for specified pathogen.
 *  `smoothed_percent_visits_combined`: 3 week moving average of the sum of the three percentages of visits for flu, rsv and covid.
-*  `percent_visits_covid_secondary`, `percent_visits_rsv_secondary`, `percent_visits_influenza_secondary`: Taken from secondary source, percentage of emergency department patient visits for specified pathogen.
-*  `percent_visits_combined_secondary`: Taken from secondary source, sum of the three percentages of visits for flu, rsv and covid.
+*  `percent_visits_covid_2023RVR`, `percent_visits_rsv_2023RVR`, `percent_visits_influenza_2023RVR`: Taken from secondary source, percentage of emergency department patient visits for specified pathogen.
+*  `percent_visits_combined_2023RVR`: Taken from secondary source, sum of the three percentages of visits for flu, rsv and covid.