fix some problems according to the checklist (1）

DESCRIPTION

@@ -1,7 +1,7 @@
-Title: Odds Ratio - A Lengthy Title
+Title: Odds Ratio
 ShortName: Odds Ratio
-Date: 2021-06-9
-Lifecycle: maturing
+Date: 2019-08-01
+Lifecycle: experimental
 Authors@R: c(
     person(given = "Jingjun", family = "Wang", role = c("aut", "cre")),
     person(given = "Shravani", family = "Samala", role = c("ctb")),
@@ -12,11 +12,12 @@ Description: This app explores confidence intervals for odds ratios and their us
               in the meta-analysis of real data.
 LearningObjectives: c(
     "The student will learn how changing sample sizes changes the odds ratio.",
-    "The student will learn how changing sample sizes affects confidence intervals."
+    "The student will learn how changing sample sizes affects confidence intervals
+    for odds ratios."
   )
 DisplayMode: Normal
 URL: https://psu-eberly.shinyapps.io/Odds_Ratio 
 BugReports: https://github.com/EducationShinyAppTeam/Odds_Ratio/issues
 License: CC-BY-NC-SA-4.0
-Tags: simulation
+Tags: simulation, real data
 Type: Shiny