modified bibliography and docstrings

Author: cecoeco

docs/src/assets/references.bib

@@ -1,16 +1,3 @@
-@article{DanischKrumbiegel2021,
-  doi       = {10.21105/joss.03349},
-  url       = {https://doi.org/10.21105/joss.03349},
-  year      = {2021},
-  publisher = {The Open Journal},
-  volume    = {6},
-  number    = {65},
-  pages     = {3349},
-  author    = {Simon Danisch and Julius Krumbiegel},
-  title     = {{Makie.jl}: Flexible high-performance data visualization for {Julia}},
-  journal   = {Journal of Open Source Software}
-}
-
 @article{bezanson_julia_2017,
   title   = {Julia: {A} fresh approach to numerical computing},
   volume  = {59},

docs/src/checklist.md

@@ -1,6 +1,6 @@
 ## Checklist
 ```@docs
-PRISMA.checklist_df()
-PRISMA.checklist()
+PRISMA.checklist_df
+PRISMA.checklist
 PRISMA.Checklist
 ```

docs/src/flow_diagram.md

@@ -1,7 +1,7 @@
 ## Flow Diagram
 ```@docs
-PRISMA.flow_diagram_df()
-PRISMA.flow_diagram()
+PRISMA.flow_diagram_df
+PRISMA.flow_diagram
 PRISMA.FlowDiagram
-PRISMA.flow_diagram_save()
+PRISMA.flow_diagram_save
 ```