fix table new line errors

docs/modules/contributions/pages/contributions.adoc

@@ -36,14 +36,14 @@ follow these links to determine the version ID of the latest release.
 |Purpose
 |Maintainer(s)
 |Maven repository URL +
- GroupID:ArtifactID
+GroupID:ArtifactID
 |Source code
 
 |https://1337atr.weebly.com/jttf.html[jME-TTF]
 |Render TrueType fonts
 |(none)
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:jme-ttf[com.github.stephengold:jme-ttf]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:jme-ttf[com.github.stephengold:jme-ttf]
 |{url-github}/ATryder/jME-TTF[GitHub]
 
 
@@ -51,42 +51,42 @@ follow these links to determine the version ID of the latest release.
 |General-purpose toolkit
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:Heart[com.github.stephengold:Heart]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:Heart[com.github.stephengold:Heart]
 |{url-github}/stephengold/Heart[GitHub]
 
 |{url-github}/stephengold/jme3-utilities#readme[Jme3-utilities-nifty]
 |Graphical user interface
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:jme3-utilities-nifty[com.github.stephengold:jme3-utilities-nifty]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:jme3-utilities-nifty[com.github.stephengold:jme3-utilities-nifty]
 |{url-github}/stephengold/jme3-utilities/tree/master/nifty[GitHub]
 
 |{url-github}/stephengold/jme3-utilities#readme[Jme3-utilities-ui]
 |Modal hotkeys and help screens
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:jme3-utilities-ui[com.github.stephengold:jme3-utilities-ui]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:jme3-utilities-ui[com.github.stephengold:jme3-utilities-ui]
 |{url-github}/stephengold/jme3-utilities/tree/master/ui[GitHub]
 
 |https://stephengold.github.io/Minie/minie/overview.html[Minie]
 |3-D physics simulation
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:Minie[com.github.stephengold:Minie]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:Minie[com.github.stephengold:Minie]
 |{url-github}/stephengold/Minie[GitHub]
 
 |{url-github}/stephengold/SkyControl#readme[SkyControl]
 |Sky simulation
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:SkyControl[com.github.stephengold:SkyControl]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:SkyControl[com.github.stephengold:SkyControl]
 |{url-github}/stephengold/SkyControl[GitHub]
 
 |{url-github}/stephengold/Wes#readme[Wes]
 |Animation editing and retargeting
 |{url-forum-user}/sgold[sgold]
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:Wes[com.github.stephengold:Wes]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:Wes[com.github.stephengold:Wes]
 |{url-github}/stephengold/Wes[GitHub]
 
 
@@ -94,14 +94,14 @@ follow these links to determine the version ID of the latest release.
 |Decompose meshes into convex collision shapes
 |{url-forum-user}/RiccardoBlb[RiccardoBlb]
 |\https://jitpack.io +
- {url-jitpack}/#riccardobl/jme3-bullet-vhacd[com.github.riccardobl:jme3-bullet-vhacd]
+{url-jitpack}/#riccardobl/jme3-bullet-vhacd[com.github.riccardobl:jme3-bullet-vhacd]
 |{url-github}/riccardobl/jme3-bullet-vhacd[GitHub]
 
 |{url-github}/riccardobl/jme-igui#readme[jme-IGUI]
 |Immediate graphical user interface
 |{url-forum-user}/RiccardoBlb[RiccardoBlb]
 |\https://jitpack.io +
- {url-jitpack}/#riccardobl/jme-igui[com.github.riccardobl:jme-igui]
+{url-jitpack}/#riccardobl/jme-igui[com.github.riccardobl:jme-igui]
 |{url-github}/riccardobl/jme-igui[GitHub]
 
 
@@ -109,7 +109,7 @@ follow these links to determine the version ID of the latest release.
 |Native graphical user interface
 |(none)
 |\https://repo1.maven.org/maven2 +
- {url-mcentral}q=g:com.github.stephengold%20AND%20a:tonegodgui[com.github.stephengold:tonegodgui]
+{url-mcentral}q=g:com.github.stephengold%20AND%20a:tonegodgui[com.github.stephengold:tonegodgui]
 |{url-github}/stephengold/tonegodgui[GitHub]